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To date Kerr mason jars, look for the number 5 on the bottom of the jar. This indicates that the jar was made in 1915. If you see a 6 on the bottom of the jar, this means it was made in 1916.
To date a Kerr Mason jar, look for the word “Kerr” on the bottom of the jar. The word “Mason” should also be embossed on the side of the jar, just below the screw thread. If both of these markings are present, then you have a genuine Kerr Mason jar.
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.
9 cze 2024 · The first jars made for Kerr were evidently the KERR –ECONOMY brand jars, and that type was made in the earliest years (c.1903-1909) by Illinois-Pacific Glass Company of San Francisco, and also by the Hazel-Atlas Glass Company (based in Washington, PA and later at Wheeling WV) from 1906 to 1909.
Consider the Glass Color: Clear glass Kerr jars are common, but the jars also came in a variety of colors, including green, blue, and amber. These colored jars, especially rare hues, can often date to specific time periods. Inspect the Closure: The type of closure can also provide dating clues.
19 maj 2023 · Mason jars were patented by John Landis Mason in 1858 and became a popular choice for preserving and storing food. Value of these jars depends on the rarity, color, and embossing. Look for unique embossed logos or unusual colors like amber, olive green, or red-tinted glass to increase value.
1 lip 2024 · If you spot wide-mouthed jars with embossed fruit motifs, designs, and logos or two-piece metal lids, it’s a newer mason jar from the late 1880s to the early 1900s era. These are also quite popular, costing around $20 – $120.
