Dating vintage kerr canning jars

dating vintage kerr canning jars

How can you tell the date of a Kerr jar?

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 machine-made after 1915.

Are Kerr jars still made today?

Todays modern Kerr jars are all machine-made. Typically embossed on the jar is the date of manufacture, plant location, job number, and other information. The Kerr lids have gone through several evolutions since 1903 and should never be reused for canning.

Can You process old canning jars?

I have a lot of old, vintage canning jars. I love the history they carry as well as their charm and character. While it is okay to use them for storage or even as a refrigerator container, you should never process old jars in a canner.

What does the finish on a fruit jar say about the date?

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 machine-made after 1915.

How can I tell how old a Kerr jar is?

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.

How can you tell what year a Ball jar is?

Ignore the 1908 patent date. This was another patent date that was printed on many mason jars, and that has no bearing on the year of production. In fact, Ball used this patent date on their jars well into the 1930s, so this year cannot be used to accurately date a Ball jar.

Are Kerr jars still made today?

Todays modern Kerr jars are all machine-made. Typically embossed on the jar is the date of manufacture, plant location, job number, and other information. The Kerr lids have gone through several evolutions since 1903 and should never be reused for canning.

How can you tell how old a mason jar is?

To date an old Ball mason jar, look at the logo on the jar. If the logo is an insignia made up of the letters BBGMC, the jar was made between 1885 and 1886. If the logo is written using block letters, the jar was likely made between 1892 and 1896.

How can you tell how old a fruit jar is?

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 machine-made after 1915. If the jar is rough and jagged at the base, it was machine-made between the early 1900s to 1930.

How can you tell the date of a Kerr jar?

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 machine-made after 1915.

What is the history of the fruit jar?

Fruit jars are very hard to generalize since they appear to have transitioned from mouth-blown to semi and fully automatic machines over a long period of time. Part of this is because the earliest semi-automatic machines put into production in the mid-1890s could only make wide-mouthed containers like fruit jars (Jones & Sullivan 1989).

What do the marks on the side of a jar mean?

Other marks on the side of the jar describe the type of seal (such as EZ Seal), or a new feature of the jar (such as square sides). Some have measurement marks embossed into the sides, and others have extensive decorations. For example, Canadian-based Crown jars feature an elaborate embossed crown on the side.

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