Vintage Canning Jars: How to Identify Old Jars and Their Value
Whenever I find glass jars or mason jars at thrift stores, flea markets, garage sales, or rummage sales, I always stop to look a little closer. I want to know how old the jar is, what type of jar it is, and whether I just found a useful old piece for home decor or a rare antique jar with real value.
Around here, vintage jars feel like a rite of passage on a homestead. A homestead kitchen is just not complete without older jars lining pantry shelves, holding dried herbs, grains, flower stems, or seeds.
There is something about antique jars and vintage glass jars that brings a bit of the past into your home. They connect you to your roots. I can still picture my grandma filling older jars and working in the kitchen with old mason jars sitting on the counter.
I am not writing this as an antique collector; I do not have much expertise in that area. My husband and I just admire and love antiques. I am simply writing this as a homesteader with years of experience in finding old jars, useful vintage items, and a good treasure hunt.
If you are trying to learn how to spot vintage canning jars, figure out their approximate age, and better understand the value of old canning jars, this canning jar guide will hopefully help.
What Makes a Canning Jar Vintage?
A good rule of thumb is that jars more than 30 to 40 years old are often called vintage jars. Antique canning jars are older still, usually from the early 1900s or earlier.
The first Mason jars go all the way back to John Mason, whose Mason’s patent changed home canning forever.
Not every old jar is rare, though. Some older jars are common, while others bring a higher price because of their color, closure, age, or the company that made them.
Vintage jars vs. antique jars
Vintage jars are old, not as rare, and have a lower value, but antique jars are usually older and often harder to find. A vintage mason jar from the mid-20th century may still be collectible, while antique glass jars from the 1800s or early 20th century may be worth more if they are in excellent condition.
The line can be blurred when referring to them as Vintage or Antique.
Why are old canning jars still popular?
Old canning jars are still popular because they are useful, beautiful, and full of character. Many people use vintage jars for home decor, food storage, flower vases, or pantry organization.
Others enjoy hunting for rare jars at garage sales, thrift stores, flea markets, or antique stores. Some people even collect a complete set of original lids, rubber gaskets, zinc lids, or matching glass tops.
How to Identify Vintage Canning Jars
There are a few key factors that help identify older jars. Start with the front of the jar and work your way down to the bottom of the jar.
Look at the logo, embossing, mold seams, glass color, and lid style. Sometimes the smallest detail is the strongest clue.
Start with the jar’s embossing and wording
One of the easiest ways to identify a vintage Ball Perfect Mason jar, Atlas Mason jars, or other antique jars is to look at the wording embossed into the glass.
The front of the jar may include a brand name, patent date, or phrases like Perfect Mason, Strong Shoulder, Shoulder Seal, or Mason’s Patent.
The original logo can be a strong clue, too. Ball jars changed over time, and the script style helps estimate their approximate age.
Look at the handy chart below on Vintage Ball Logos.
Look at the shape, size, and color
The shape of a jar tells a story, too. Some vintage canning jars are tall and narrow, while others are short and wide. Some are square, some are rounded, and some have a prominent ridge near the place of the screw-on lid.
Atlas jars, Strong Shoulder jars, and shoulder seal jars can all have slightly different shapes.
Different colors also matter. Blue mason jars, Ball blue jars, and jars in amber, amethyst, or green often catch people’s eye first. The blue color in some older Ball Mason jars is one reason they are still such a collectible item today.
Check the bottom for numbers, maker’s marks, and pontil marks
Turn the jar over and study the bottom of the jar. Many jars have a mold number on the base. A mold number does not tell you the exact year the jar was made.
It simply tells you which mold was used during the manufacture of fruit jars.
So if you see a 7 or 12 on the bottom, that is usually a mold number, not a date.
You may also see maker’s marks or other symbols. These can help you connect the jar to a certain company.
Older handmade jars may show a pontil mark, sometimes called a punty mark. This is a rough or scarred-looking spot in the center of the base where the hot glass was held during production.
It is one more strong clue that the jar is very old. Pontil marks are most common on very early glass.
Notice the glass texture, bubbles, and seams
Older glass often has more character. You may notice wavy glass, visible mold seams, or tiny air bubbles in the glass. Those bubbles are often called seeds. Seeds are small trapped air bubbles left in the glass during production.
They are one of the little details that make antique glass jars and vintage glass jars so pretty.
You may also notice manufacturer defects, thicker glass, or uneven glass in really old jars. In handmade or semi-automatic process jars, those little flaws are often part of what makes them special.
Mold seams can help date a jar, too. If the seams stop below the lip of glass jars, that often points to an older hand-finished jar. If the seams run all the way through the top and screw threads, the jar is usually newer and machine-made.
Common Vintage Canning Jar Brands to Know
There are several jar brands worth learning about if you want to get better at identifying antique jars and vintage items.
Ball jars and Ball Mason jars
Ball jars are probably the best-known jars in home canning. The Ball Brothers Glass Manufacturing Company began in Buffalo, New York, before moving production to Indiana.
The Ball logo changed many times throughout the years, which is why Ball canning jars are often dated by the script embossed on the glass.
You may hear people talk about the Triple L logo, the dropped A, or the original logo styles.
Those logo changes help date a vintage Ball jar. Ball blue jars are especially popular, and some older Ball Perfect Mason jar styles are more collectible than others.
Later, Ball Corporation grew far beyond home canning jars, but old Ball Mason jars are still some of the most recognized older jars on the market.
Atlas mason jars and Atlas jars
The Atlas mason jars are another common vintage find. Made by Hazel-Atlas, and many are marked right on the front of the jar. Atlas Strong Shoulder and Atlas E-Z Seal jars are a few examples you may run across.
Atlas jars are popular with collectors and homesteaders because they are still fairly easy to spot and come in several styles.
Kerr jars
Kerr jars are another brand to watch for. Alexander H. Kerr helped popularize self-sealing jars and his own versions of closures that led to the metal lid systems many of us know today.
Older Kerr jars may be embossed with Kerr Self-Sealing on the front of the jar.
Dominion, Gem, and other older jar names
Dominion jars, Gem jars, Buffalo jars, and White Lightning jars are other names to keep an eye out for.
Some Canadian jars have unique markings. Dominion and Improved Gem jars can be collectible, especially if they are in excellent condition.
Other names you might spot include John L. Mason, Hero Improved, The Pearl, and other antique jars with unusual wording. Some rare jars bring a higher price simply because fewer were made or they are an odd shape, or have a unique looking glass.
Jar Colors and What They May Mean
The color of the glass is one of the first things people notice. It is also one of the first things that can affect value.
Clear glass vs. blue mason jars
Clear jars are common, but blue mason jars are often more desirable. A Ball blue jar or another blue mason jar with an older logo may be more collectible than a newer jar in plain, clear glass.
Rare jar colors collectors look for
Some rare jars come in different colors like aqua, amber, amethyst, green, or unusual blue shades. These antique canning jars can be worth more, especially when paired with a rare shape, unusual branding, or original lids.
Why color alone does not always mean value
Color matters, but it is not everything. A reproduction jar may be blue and still not be worth much.
A clear antique jar with a rare logo, strong embossing, or odd shape may be worth more than a colored jar. Key factors include age, rarity, jar condition, closure style, and collector demand.
Old Jar Closures and Lid Styles
Lid style is another part of identifying old jars. The closure often tells you a lot about age and how the jar was meant to create an airtight seal.
Zinc lids and milk glass liners
Some jars used zinc lids with milk glass examples tucked inside the lid. The milk glass liner helped keep food from touching the metal lid. Zinc lids are still a neat find, especially when the jar still has original lids or a complete set.
Glass lids with wire bail closures
Lightning jars are easy to spot because they use a wire bail, a rubber ring, and a glass top. This ingenious wire clamp system helped create an airtight seal. The metal clamp or wire bale closure wraps around the neck and top of the jar.
Some of these use a rubber gasket or rubber ring under the lid. A frisbee-shaped glass lid, a glass top, or a shoulder seal style can all be clues that you are looking at an older jar.
Two-piece lids and screw threads
Jars with screw threads near the top are usually newer than wax-seal jars or clamp-lid jars. The place of the screw-on lid and the shape of the threads can help you tell whether you have one of the newer jars or an older example.
How to Tell if a Vintage Jar Has Value
The value of old canning jars depends on several things. You can really go down a rabbit hole here, and I sure did. I will include some links for you to look at some beautiful and extremely rare jars, to help you become better at identifying them.
Age and rarity
In general, the older the jar, the better the chance it may have value. Jars from the early 1900s or before are more likely to be collectible than newer jars from the later 20th century.
Rare jars, unusual embossing, and uncommon colors can all push value higher.
Condition and damage
Condition matters a lot. Chips, cracks, broken lips, missing closures, or damaged glass all lower the value. A jar in excellent condition with visible embossing and its original lid system usually does better.
Color, embossing, and unusual shapes
Blue color, amber glass, strong embossing, unusual sizes, or odd shapes can make a jar more desirable. A rare example with visible lettering, an older patent date, or a unique jar shape often sells for a higher price.
Collector demand and resale value
Collector demand matters too. Some jars do well at an auction house, while others are better suited for a homestead shelf.
If you think you have found something special, compare sold listings online, study vintage canning jar groups, or ask an antique store owner who knows glass.
Are Vintage Jars Still Safe to Use?
This can be a gray area. Some people still use older jars for home canning, but I personally think the truly rare or antique jars are better left out of the canner.
When an older jar may still be usable
Some older jars may still be strong and usable if they are not rare, have no damage, and are more like everyday older jars than true antique canning jars.
When a vintage jar is better for display or dry storage
If a jar is unique, rare, handmade-looking, or hard to replace, I would keep it for food storage, dry goods, flowers, or home decor.
I would not want to risk breaking a beautiful antique jar in a pressure canner.
If you want to know more about safety when it comes to canning and using vintage jars, check out my post “Are Vintage or Used Jars Safe for Home Canning?”
Where to Find Vintage Canning Jars
You can find vintage jars in all sorts of places if you keep your eyes open.
Thrift stores, garage sales, and estate sales
Thrift stores, garage sales, and estate sales are some of my favorite places to look. I have found jars in junk piles, old barns, family garages, and random boxes full of odds and ends.
Garage sales are still one of the best ways to find cheap jars, and I usually have the best luck at them.
Here is a better post dedicated to Thrifting for Canning Jars.
Antique stores, flea markets, and online marketplaces
Antique store shelves, flea markets, Facebook Marketplace, Etsy, and auctions are all places where rare jars show up. Prices may be higher there, but sometimes you can study the photos and learn a lot before you ever buy.
What I look for before bringing one home
Before I buy, I look for visible embossing, unusual color, old closures, good glass, and anything that stands out.
If the jar is already priced high, I take a minute and think about whether it is worth it. Sometimes a jar is priced to move. Other times, it is priced for profit. I prefer finding vintage jars the cheap way.
FAQs About Vintage Canning Jars
How can you tell how old a canning jar is?
Look at the logo, embossing, patent date, jar shape, mold seams, mold number, closure style, and the bottom of the jar. All of those details help estimate age.
Are old blue mason jars worth anything?
Yes, they can be. Blue mason jars, especially older Ball jars or unusual brands, may have value depending on condition, shape, and rarity.
What vintage jar brands should I watch for?
Watch for Ball jars, Ball mason jars, Atlas mason jars, Atlas jars, Kerr, Dominion, Gem, White Lightning, Buffalo jars, and jars marked John Mason or John L. Mason.
Are antique canning jars safe to use?
I would not use true antique jars for canning. I think antique jars are better saved for display, dry food storage, or shelf decor.
Where is the best place to find vintage canning jars?
I like thrift stores, flea markets, garage sales, estate sales, old barns, farm junk piles, antique stores, and online auctions.
Collecting Vintage Canning Jars
I love collecting vintage jars, but only when they fit in my budget. I am not about to spend a fortune on every rare jar I see.
Most of the jars on my homestead still serve a purpose. If they have real antique value, they become decor, flower vases, or food storage for things like rice, wheat berries, seeds, and nuts.
That is part of why I love antique glass jars so much. They are useful, beautiful, and full of history all at the same time.
Wanting to learn more about canning jars, read my other posts.
- Thrifting for Canning Jars: What to Look for (and Avoid)
- Are Vintage or Used Jars Safe for Home Canning?
- Canning Supplies for Beginners on a Budget
Looking to research more on antique jars?
These two sites have many photos and tons of information that will help you identify any rare jar you may find, better than any Google image search.
- Virtual Museum of Historical Bottles and Glass (Great resource for learning)
- NORTH AMERICAN GLASS (Auction page, tons of photos of past auctions)
- Understanding glass colors (Lots of photos and information)
