How to tell the age of mason jars

In Bottles > Fruit Jars > Show & Tell. Fruit Jars 28 of 139: 2. Love it 0. Like it bottle-bud loves this. fortapache loves this. Add to collection ... BALL PURPLE MASON JAR Antique WIDE ... $27. Antique Strong Cornflower Blue Kerr... $89. BALL 1/2 HALF PINT BLUE MASON Jar ~... $9. See all. Comments.

How to tell the age of mason jars. The B on ball jar is open and an underscore is present. can anyone tell me how old it is and if it has any value. Thank you! luv_oldies, 11 years ago I have a #1 red key Mason Jar no chip,s/crack,s . And 1 #52 Patton Nov 1858. And 1 #28 Mason Jar nov,1858 with what I think is Penn State logo. Can anyone give me price range,s for these item,s ...

With the lid on, shake up your jar to let the dressing seep through the layers. Once you get through the top section of your jar, mixing up the other ingredients becomes a lot easier, too. Mason ...

The opening of the canning jar is called the "mouth.". Canning jars come in two main mouth sizes: regular and wide mouth. Regular mouth jars typically have a mouth diameter of approximately 2.75 inches, while wide mouth jars are 3 inches. These are standard between manufacturers.Yes, blue mason jars are rare. They were first produced in the early 1800s and were made by a variety of companies. The most common type of blue mason jar is the Ball jar, which was first manufactured in 1884. These jars are typically aqua blue in color, but can also be found in other shades such as green, blue-green, and even pink.Hi Harlow , the Magic Mason's are from the 1970's, so it depends on what you consider antique. Around 45 or so years old, which some would call "Vintage' but ...2,421. Reaction score. 6. Points. 148. I just wondered if anyone knew how one could find the age of an old canning jar. I've been looking at a few websites, but haven't found anything very helpful yet. I noticed a lot of similar type jars for sale on e-bay but none of the sellers seems to know the date of manufacture. Aug 29, 2012.With the lid on, shake up your jar to let the dressing seep through the layers. Once you get through the top section of your jar, mixing up the other ingredients becomes a lot easier, too. Mason ...Mason jars make great centerpieces. Check out these 25 creative mason jar centerpiece ideas for any occasion. Mason jars make great table decorations. They can be decorated in so many different ways. They can be painted, you can add burlap and ribbon, and use them as vases or candle holders. You can DIY them to have farmhouse style, be rustic ...In this section, we compare the five best vacuum sealer for mason jars, food bags, bottles, and even containers to help increase the shelf-life of all your homemade food. 1. The Best All-rounder - FoodSaver V4840. This 2-in-1 vacuum sealer system comes with a handheld vacuum sealer attachment that is extremely useful for sucking out the air ...

Distinctive jars kerr the warehouse for was added to go in digger odell publications. Buy the kerr canning lids, ball jars are pint size, nice for vintage dating jars dating their true age of the united states. It can use with all those in size, jars vintage mason jars. Thousands old the mason jar lids, and the s to you have.Joy will demonstrate how to wrap a wire around a mason jar to create a hanging lantern.UPDATE: We may no longer carry some of the products used in this video...Wipe jar rim with a clean cloth, affix lids and rings, and firmly tighten rings, but do not overtighten. Place jars into the rack in the large pot, bring water back to a full rolling boil, and process jam in the boiling water bath for 10 minutes. Remove jars from the canner and place them in a prepared area to cool.Ball Mason Jar Age Chart. Lucky for us, this handy chart can help you keep track of all the Ball jar logos. There are about eight different logos in total, starting in the 1880s and finishing in ...3. Distress 'Em. You can make mason jars look old by distressing them with paint. Here's a tutorial to learn how to distress mason jars for a vintage-y look. the simple craft diaries. 4. Make Them Look Cloudy. Make mason jars look old with paint on the outside, giving it a 'cloudy' look. Try the tutorial.

Well, someone must still use them for food storage, but we've found 43 mason jar crafts for you to try. Lighting, candles, vases, terrariums - these are one of the best containers ever for DIY decorating ideas. There are literally hundreds of ways to use these versatile jars for your outdoor decor. Hang dozens of mason jars in a huge old ...Place the lids in a bowl full of distilled white vinegar. Leave it to soak for a while, or at least until you see all of the rust disappear. If, even after a while, the rust is still persisting, then take a steel wool scrubber to scrub off any of the remaining orange.2. Center the cellophane over the top of the jar and secure it in place with tape or an elastic band. 3. Begin wrapping the cellophane around the jar, making sure to smooth out any wrinkles as you go. Once you reach the end of the cellophane, secure it in place with another piece of tape or an elastic band. 4.The Ball Perfect Mason Jar: Produced between 1910 and the early 1960s, these jars are considered iconic and hold sentimental value for many collectors. Clear pint-sized jars from the early years can fetch around $10 to $15, while rare amber or blue versions might reach up to $300. 2.10. WILLOUGHBY STOPPLE. When this 1858 jar's two- plate top with a wingnut proved defective, most were thrown out. Today the scarce find proves that one era's trash is another's treasure. VALUE: $500. Today, Ball is the most sought- after brand. Here's a cheat sheet to determining a jar's approximate age: These vintage mason jars …The value of an old Ball Mason jar depends on its age, condition and rarity. The most common and oldest ones are worth about $5, while the rarer ones can go for up to $50. Credit: adirondackgirlatheart.com . Mason Jar Collectors Guide . There’s something about mason jars that just makes them so darn charming.

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Unfortunately, determining the age of an Atlas Mason Jar is a difficult task, especially if you don’t know much about old Atlas Mason Jars. Some glass companies that produce fake Atlas Mason jars imitate the date written on the original Mason jar or even engrave false dates on the glass to make it look like the original Mason jars.Masontops makes products in both regular and wide mouth sizes, but we have some products-like the Complete Fermentation Kit, Coffee Caps, and Tough Tops-available for wide mouth Mason jars only. Before you buy your Mason jars, read this blog post to determine which type of Mason jar is right for you and what brands to buy from.Ball Mason Jar Age Chart. Lucky for us, this handy chart can help you keep track of all the Ball jar logos. There are about eight different logos in total, starting in the 1880s and finishing in ...Use the damp vinegar rag to rub and scrub away any rust or orange streaks too. Once you've sufficiently worked the lids and rings with the rag, use a sponge and warm, soapy water to wash the lids and rings by hand. Don't forget to completely dry them since lingering water typically causes the rust to begin with, according to Mind Body Green.The most valuable ginger jars have one thing in common –they each have a reign mark. Examine the bottom of your jar and try to identify what dynasty it is from, or honors. with identifiable reign marks. This Blue Ginger Jar has a verified Kangxi period mark which dates it before the 18 th Century. It is worth up to $4,500. Color

The only repro BALL PERFECT MASON Jars that I know of are smaller, recently made jars (so far, in the years 2013-2016) made of thinner, lighter-weight glass and they are not in the original blue-aqua color. I described them in the text on this page. They are (so far) made of light cornflower blue glass, amethyst and true green.Get the best deals on Golden Harvest Mason Jar Indiana Collectible Jars 1900-Now when you shop the largest online selection at eBay.com. Free shipping on many items ... Lot of 2 Mason Jars Golden Harvest Wide Mouth 32-Ounces Quart No Lid Clear. $30.00. or Best Offer. Free shipping. 26d 14h. Vintage Anchor Golden Harvest Mason Canning Jar. $5.00.The age of a mason jar remains paramount in determining its worth; collectors often covet those that hark back to the late 1800s to early 1900s. Notably, the colors of these age-old containers play a crucial role, with rare hues like cobalt blue, amber, and green drawing higher prices than the more common clear or aqua versions.John Landis Mason invented the Mason Jar on November 30, 1858. In 1884, Ball Corporation began manufacturing glass home-canning jars, the product that established Ball as a household name and licensed Mason's design. There are few everyday objects more iconic than the Ball Mason jar. Stand it up next to the most memorable product designs of ...Image Credit. You'll find old bottles in colorless varieties, as well as a wide range of colors, including amber, blue, purple, and green. Sometimes color served a purpose that's related to the contents of the bottle. For example, some amber and other dark bottles may be that color because the contents were sensitive to light.Older materials that pre-date the 19th century are Canning jars. Examine the age signs and quality of the glass. Antique Mason jars have isolated micro-bubbles in the glass. Their glass is thicker than the modern set, which is why they last for years.First, look for the Kerr logo. This was used on all Mason jars produced after 1923. Second, check the bottom of the jar for a date code. The date code will tell you when the jar was …A: Mason jars come in a range of sizes, but the most common ones you’ll encounter are 8 ounces (half-pint), 16 ounces (pint), and 32 ounces (quart). These dimensions refer to the volume each jar can hold. There are also larger options available, such as half-gallon and gallon-sized jars, which are perfect for bulk storage or large-scale ...Companies have caught on and now make lids in a variety of styles, colors and materials for all kinds of Mason jar uses from overnight oats to brewing loose leaf tea. Here are 10 lids that will ...

The "Magic Mason" jar is a canning jar, Mason was a company that made canning jars. I still have and use some, but don't have any of the "Magic Button" lids, although I used them in the 70s. The other one, though, I don't know about. The w and arrow are probably a company logo, numbers on the bottom are usually mold numbers or maybe the year it ...

Richard Cole is curator of the home canning jar collection at the Minnetrista Cultural Center, 1200 North Minnetrista Pkwy, Muncie, IN 47303-2925, (765) 282-4848, Ext. 117. Kovel's On-Line Price Guide to Antiques and Collectibles. Antique jars are highly collectible.They also continued to make the MASON’S PATENT NOV 30th 1858 jars (machine made smooth lipped varieties) up into the early 1900’s. The very first machine made Ball jar is not positively known, but most likely was either a Ball STANDARD or a Ball IMPROVED MASON. This script style was used up until about 1910.Calculate the ball's diameter with the formula: Diameter in inches = 0.223304 x (Weight in grams) to the power of 1/3. Compare the calculated diameter to the measurements in Step 4. Archaeologists have discovered authentic Revolutionary War musket balls that were severely misshapen, some showing human teeth marks.Blue Ball Mason Jar, With Zinc Lid, Perfect Mason, Made around 1910, Antique Quart Jar, Vintage Blue Jar, Antique Decor, Blue Glass (340) $ 19.99. FREE shipping Add to Favorites ... Under "Add your personalization," the text box will tell you what the seller needs to know. Fill out the requested information.The Hazel-Atlas Company was an actual company from 1902 to 1964. They made actual Mason jars for home canning. But the Atlas "Mason" jars that you see now pasta sauces, etc., sold in are not actually made as actual, genuine Mason jars. Aug 3, 2015 - Kerr self-sealing jars and the Kerr Economy were created in 1903.The answer is yes! Freezing Mason jars with soup is a great way to save time and money. Here's how to do it: 1. Choose the right size Mason jar. Quart-sized jars are the best for freezing soup. 2. Fill the jar halfway with soup, leaving room for expansion as the soup freezes. 3.To seal a jar using paraffin wax, melt the wax in a pan placed on a boiling pot of water. Pour the wax into the prepared jars by the spoonful until it's almost to the brim. Let it cool to an opaque white before putting on the lid. Whether this is a safe method of canning is still being debated. With this method, you run into the same problem ...The most common mason jar sizes are half-pint, pint, quart, and half-gallon. Jars are categorized in 2 ways: Capacity –measured in ounces. Mouth diameter –regular or wide. Regular mouth jars are 2.5″ in diameter while wide mouth jars measure 3″ across. The smallest standard mason jars are 2 ounces and the largest holds one gallon (128 ...

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The simple rule is that the older the jar, the more valuable it is. Consequently, a jar from the 1800s will cost a lot more than a jar from the 1900s. The logo on the jar can give you its approximate age. Based on the chart below, you can see how the mason jar logos have been changing over the last several years.Ball Jars. Rare Antique Green Ball Mason Triple L Jar. Ball jars are one of the most recognized brands of vintage canning jars. Aqua Ball quart jars made from 1900-1910 with shoulder seals are worth $15-$18, while half-gallon jars made from 1910-1923 with the same seal can be worth $25-$30.1. "How can I identify the age of my Atlas Mason jar?" Ah, the quest for uncovering the secrets hidden within your jar's past! To determine its age, scrutinize any markings or embossments on the jar itself. Early Atlas jars typically featured maker's marks such as "ATLAS" inscribed within a double-lined oval-shaped emblem on the ...How to tell real genuine Atlas Mason jars. You may see at yard sales or flea markets real, genuine Atlas Mason jars, made by the Hazel-Atlas company, floating about inexpensively. All their Mason jars had the symbol HA on them; it stands for "Hazel-Atlas", with the A tucked under the H.Let me start by saying this: one of the greatest things about Mason jars is that there are only two lid sizes: again, regular mouth and wide mouth. This means that any regular mouth lid will fit on any regular mouth Mason jar, and any wide mouth lid will fit on any wide mouth Mason jar.That patent date appeared on Mason (and other) canning jars right up until the 1920's. Most of the time that date embossed on the front of a jar has very little relation to its true age. A. A shoulder seal jar, "Mason's Patent Pending Nov. 30th 1858," in the 1/2 gallon size. These were machine made from 1890-1915. B.Jun 27, 2013 · Use The Logo To Find An Approximate Age. It would have been much easier if Ball had placed a date on each and every jar, but that didn’t happen. Luckily, there are some tips and tricks you can use to determine an approximate age for your jar. First check the logo, which changed fairly frequently until about 1962. Check the jar from top to bottom. The Kerr name will be embossed on the glass. There are some general guidelines to approximate the date of a vintage Kerr jar between 1915 and 1930. The finish on a fruit jar can tell you roughly about the date it was made. If the finish on the base is smooth on the lip of the jar, it usually means the jar was ...Yes, blue mason jars are rare. They were first produced in the early 1800s and were made by a variety of companies. The most common type of blue mason jar is the Ball jar, which was first manufactured in 1884. These jars are typically aqua blue in color, but can also be found in other shades such as green, blue-green, and even pink.Fill the glass jars about 3/4, leaving some room at the top. The buds should move freely when you shake the jar. If they stick together, they probably still have excess moisture and need to be dried a little longer. In this case, just leave the mason jar open for a while so the water can evaporate.Check the jar from top to bottom. The Kerr name will be embossed on the glass. There are some general guidelines to approximate the date of a vintage Kerr jar between 1915 and 1930. The finish on a fruit jar can tell you roughly about the date it was made. If the finish on the base is smooth on the lip of the jar, it usually means the jar was ... ….

Kerr Group, Inc. (1992-1996) Businessman and entrepreneur Alexander Hewitt Kerr (September 4, 1862 – February 9, 1925) organized this company in Portland, Oregon in 1903 under the name Hermetic Fruit Jar Company. The official name was changed in 1904 to Kerr Glass Manufacturing Company. Kerr did not actually manufacture glass during the ...Check the jar from top to bottom. The Kerr name will be embossed on the glass. There are some general guidelines to approximate the date of a vintage Kerr jar between 1915 and 1930. The finish on a fruit jar can tell you roughly about the date it was made. If the finish on the base is smooth on the lip of the jar, it usually means the jar was ...Oct 27, 2007#3. Michael, this brings up a good point that newer collectors may not be aware of. The early Ball-made zinc caps do not have the script Ball logo on the top (plain), but check the liner inside... This is a good cherry-picking opportunity if you have a chance to look through a lot of lids.9. Home Fermentation Kit by Ferment'n. The Ferment'n Ferment'n Home Fermentation Kit contains is a two piece plastic lid and a ceramic weight. The bottom part of the lid slides down into the opening of a wide-mouth mason jar and is secured with a metal canning band. Water is poured into the moat in the lid.We came across two ball mason jars 1/2 gallon size with a glass seal marked with a J in a square and Mason underneath. One has 64A/A10 on the bottom and the other has a 1 underneath the Ball Perfect Mason on the side of the jar. Can you tell us the date of manufacture and value. May 6th, 2012 at 3:31 pm jennifer fenwick Says:Bennett's Backwards No. 2 Quart Mason Jar. $1,295. Ball Perfection Milk Glass Top. $702. Upside-Down Ball Mason Jar. $475. Currently, these are some of the most valuable mason jars that've ...The jars have a subtle blue tint on them which adds a ton of character. 8. Frosty Night Light. Image source + tutorial. This mason jar nightlight looks unreal! The blue paint gives the jar a magical looking frosty glow when the lights are turned on. 9. Patriotic Mason Jar Light Centerpiece. Image source + tutorial.Early 1900's Blue Ball Perfect Mason Jar One Quart with Zinc Lid . Visit the Ball Store. 4.4 4.4 out of 5 stars 43 ratings. $14.99 $ 14. 99. In Stock . Material: Porcelain: Brand: Ball: Color: Blue: Closure Type: Screw: ... Would you like to tell us about a lower price? Early 1900's Blue Ball Perfect Mason Jar One Quart with Zinc Lid. Share ...Common Glass Maker's Marks on Jars. For example, you might find a glass bottle with a diamond on the bottom. If it has an I in the middle (which may look like a 1 or just a dot), it's the mark of the Illinois Glass Company. A diamond with no symbol in the middle could belong to the Diamond Glass Company in Pennsylvania.Well, first you have to tell how old the jar is, and you can tell its approximate age by the design of the logo. This chart shows how the label for the Ball jar company, which started producing ... How to tell the age of mason jars, Soak the fruit in the vinegar water for a short time. Pour the fruit into a strainer and rinse it well with cool water. Place the fruit onto a paper towel so that it can dry. Once the fruit is completely dry, put it into clean and sterilized mason jars. Put the lids on the jars and make sure that they're sealed tightly., 1. Pint-sized (16 oz): Coming in at approximately 473 ml, pint-sized mason jars are often favored for small-scale preserving projects. They’re ideal for jams, jellies, salsas, or even homemade sauces that don’t require substantial quantities. 2. Quart-sized (32 oz): Double the capacity of a pint-sized jar, quart-sized mason jars fit around ..., The value of a Ball Perfect Mason Jar varies depending on the age, condition and rarity of the jar. Generally, the price range for a single jar is anywhere from $5 – $50 for uncommon colors, to $50 – $200 for more rare colors and designs. Also, jars made before the 1930s tend to be more valuable, as do jars with the original lid., One vintage amber glass jar recently sold for $375, while many fall in the $10-$20 range. You can find them in several sizes: half-pint, pint quart and gallon. Even though many Atlas Mason jars are marked with dates, they aren't always reliable for determining age as some molds were used for years., The only repro BALL PERFECT MASON Jars that I know of are smaller, recently made jars (so far, in the years 2013-2016) made of thinner, lighter-weight glass and they are not in the original blue-aqua color. I described them in the text on this page. They are (so far) made of light cornflower blue glass, amethyst and true green., Serve this mellow-spiced chutney with cheese and crackers or as an accompaniment to pork or poultry entrées. Make the most of your canning experience with jars that are ideal for any type of food They are versatile, multi-use home canning mason jars. Bernardin has been Canada's trusted leader in mason jars, home canning products, custom ..., Jar lid glass Retro atlas mason jar Presto glass Insert Vintage canning lid Antique ball jar lid Old soviet kitchenware. (130) $8.00. Check out our antique vintage mason jars with lids selection for the very best in unique or custom, handmade pieces from our jars & containers shops., Via The Crafted Sparrow. Going off the stripe theme, here's another way to beautify your jars, create a white paint base for them, and then use a nice bright color to stripe them. You can make your stripes as thick or as thin as you want. I often find I like the look of thick stripes the best. Via Suburble., Right now, the reproductions are only known in two sizes, 1/2 pints and quarts. First, about the 1/2 pints. According to the Redbook of Fruit Jars (and several expert 1/2 pint collectors I have consulted) these were reproduced in Taiwan c1985-1989. They are known in aqua, sky blue, lime green, and amber. They are known in several styles of ..., 89 - 400. The most versatile thread finish for wide-mouth containers. 89-400 thread finish is found on glass and plastic jars and canisters. More commonly found on plastic containers, the 89-400 thread is used across a variety of sizes ranging from 4 oz to 32 oz. For the lower range of sizes, jars with an 89-400 thread include shapes such as ..., What Ball Mason Jars Are Worth Money? Certain vintage Ball Mason jars can be valuable to collectors, especially those with unique characteristics or historical significance. Here are some factors that can make a Ball Mason jar worth money: Age: Older jars, especially those produced before 1910, tend to be more valuable due to their …, Products were made from our first introduced in and yellow roses make the glass jar dating of patent date. Ball square mason jars step 3. Shop drey mason jars. Jars of retro country charm and one antique ball blue books dating old ball perfect mason jars they evoke. One that drey jars., Well, first you have to tell how old the jar is, and you can tell its approximate age by the design of the logo. This chart shows how the label for the Ball jar company, …, The term "antique mason jars" can be a bit misleading as even the first mason jars are a little over a century and a half old. Ordinary glass containers are much older than that, of course, but mason jars are special. They are hermetically sealed, a technology that was invented by John Lantis Mason in 1858, hence the name., Mason Jar Lids Regular Mouth Canning Lids for Ball, Kerr Jars - 24-Count Split-Type with Leak proof & Airtight Seal Features, Metal Mason Jar Lids for Canning - Food Grade Material, Silver/70 MM 4.3 out of 5 stars 4,146, The Strong Shoulder Mason jars, produced from the 1920s to the 1930s, are recognizable by their squared shoulders and embossed “Atlas Strong Shoulder Mason” text on the front. These jars usually had a glass lid and metal clamp closure. Atlas Special Mason Jars. Atlas Special Mason jars, with their square shape and distinctive vertical ..., The Ball Perfect Mason Jar: Produced between 1910 and the early 1960s, these jars are considered iconic and hold sentimental value for many collectors. Clear pint-sized jars from the early years can fetch around $10 to $15, while rare amber or blue versions might reach up to $300. 2., Mason jar sizes range from as small as 2 ouncies to 128 ounces (1 gallon) in size as you can see in the included chart above. These are: 2 oz (59 milliliter) 4 oz, also called quarter pint (125mL) 8 oz (half-pint size, 250mL) 12 oz (375mL) 16 oz, pint size (500mL) 24 oz (1 1/2 pint, 750mL), Clean the jars and lids with warm, soapy water. Rinse the jars and lids with clean water. Place the jars on a baking sheet and put them in a preheated oven (200 degrees F) for 10 minutes to sterilize them. Fill the jars with your desired food item, leaving about 1/2 inch of headspace at the top of each jar., Vintage Ball Mason Jar - Quart sized Mason Jars - Ball Jars - Wedding Décor - Outdoor Décor - Quart Size Ball Jars - 1910 - 1923 (798) $ 10.00. Add to Favorites ... Under "Add your personalization," the text box will tell you what the seller needs to know. Fill out the requested information., Top each jar with fresh fruit or frozen berries to add sweetness and a beautiful presentation, screw on the lids, and place them in the fridge. The oats will absorb the liquid overnight, the ..., Masontops makes products in both regular and wide mouth sizes, but we have some products-like the Complete Fermentation Kit, Coffee Caps, and Tough Tops-available for wide mouth Mason jars only. Before you buy your Mason jars, read this blog post to determine which type of Mason jar is right for you and what brands to buy from., Place the white tissue paper down and brush over the top to secure. Repeat this step until the entire jar is covered. Lightly smooth the tissue with your fingers and let dry. Apply a top coat of Mod Podge over the entire jar and let dry. Cut a 2" x 21" (approximate) piece of fabric or bandana., DIY Mason Jar Centerpieces. To make your own DIY mason jar centerpieces, you'll need a few easy-to-find supplies. Order in bulk (and online!) whenever possible to save money. Mason Jars. First, you'll need mason jars (you can buy them in bulk here for about $1 each) and fill with water., Most jars have an indicator on the rim for guidance. Use a spatula to press down the contents all around the jar, packing as tightly as you can. Wipe the jar; then place the lid over the top. Screw down the lid with the band. Your Mason jar is sealed., Feb 2, 2024 · The age of a mason jar remains paramount in determining its worth; collectors often covet those that hark back to the late 1800s to early 1900s. Notably, the colors of these age-old containers play a crucial role, with rare hues like cobalt blue, amber, and green drawing higher prices than the more common clear or aqua versions. , Enjoy this easy to use reference we have designed to help you date your vintage "Ball" mason jars. Please print a copy to use at your convenience., Jul 17, 2019 - Explore Karen Altman's board "ventage mason jars real and fake way to tell the difference", followed by 674 people on Pinterest. See more ideas about mason jars, old bottles, antique bottles., From pickled okra to multi-colored marbles, your grandparents and great-grandparents used canning jars to store just about anything. These antique canning jars, commonly known as mason jars, first jumped onto the scene in the mid-19 th century, and they've been selling non-stop ever since. While people mostly use mason jars nowadays to make country chic cocktails, collectors run towards the ..., If you like to have small snacks available on your desk such as M&Ms, jelly beans, or peanuts and you're looking for a weekend project consider making a snack dispenser using lefto..., The age of a Kerr Mason jar can be determined by looking at the bottom of the jar. The date code is embossed on the bottom of the jar, after the word “Kerr.” The date code consists of two letters followed by four numbers. The first letter indicates the month and the second letter indicates the year. For example, “A5” would indicate ..., Best Mason Jar - Reviews. 1. Loew-Cornell Ball Collection Elite Pint Mason Jar. The Loew-Cornell Ball Canning Jar is great for creative canning and for storage. These are beautiful jars to share with friends and family as they have a contemporary style and a unique shape, the jars are excellent to give as gifts., Marks & Logos. The best way to identify antique canning jars is by looking for marks and logos on the bottom of the jar. Many household name manufacturers used specific marks or logos that helped differentiate their products from others on the market. For instance, Ball corporation mason jars typically have a ball logo featuring two overlapping ...