If the Kerr jars and their packaging looks eerily similar to that of Ball jars, it’s because they’re basically the same: Both Ball and Kerr brands are now owned and manufactured by the parent company Jarden.
Likewise, people ask, are Kerr canning jars valuable?
The value of antique Ball, Mason and Kerr canning jars varies greatly. Typical prics range from $8 to $25 a jar. Look at the books listed above on this page for more details about how to value a jar.
Also to know is, are Kerr jars microwave safe?
Yes, newer jars have a microwave-safe symbol on them. It is important to keep in mind that glass mason jars are non-reactive but still become very hot to the touch. For this reason, it’s best not to package anything that requires long periods of microwave heating in mason jars.
Are Kerr jars oven safe?
The glass used for Ball and Kerr canning jars is not tempered for oven use and is not meant to be used in baking projects. The jars are safe to use for home canning recipes, cold or room temperature food storage, crafting, and cold beverages. … Still, like all glass, it’s susceptible to something called thermal shock.
Nowadays, you can even buy a big flat of Mason jars for pretty cheap at your local craft or household goods store — but the older ones can fetch much higher prices. Typically, the smaller or more common antique jars can go for about $20 apiece, but the more rare versions can sell for as much as $300.
You can freeze liquids in mason jars and store them for several months in the freezer. … On Ball and Kerr branded jars (which are made by the same mason jar manufacturer), the freeze-fill line is a thin line found just below the threads, about an inch from the rim.
all of the jar companies have both regular size and wide mouth. … Kerr & Ball jar lids are interchangeable.
These jars are still in production, and will be a match to any Kerr Regular Mouth Self Sealing Pint that you can buy off the shelf.
Look for the Kerr name, which is embossed onto the surface. Observe the finish of the jar. If the base is smooth at the jar’s lip, it was made by a machine after 1915. A rough base means the jar was made between 1900 and 1930.
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.
The most valuable mason jars are:
- Van Vliet Improved Jar – $23,500.
- Black Amber Magic Star Fruit Jar – $3,000. …
- 1933 Ball Upside Down Error Jar – $1,000. There are two types of Ball upside-down Mason jars. …
- The 1870 Chief Mason Jar – $800. (Photo: gregspurgeon.com) …
- 1858 Willoughby Stopple Jar – $500. (Photo: hoosierjar.com) …
Many Ball mason jars have a number printed on the bottom of the jar, but this is a mold number that does not indicate the year of production. Rather, the mold number tells you where the jar was positioned on the glass-making machine that was used to produce it.