I don’t know when it all started but all of a sudden Mason Jars are everywhere.
Questions remain on exactly which companies made these jars during the early years, since the 1858 patent evidently lasted 13 years (or 20 years, counting a patent reissue), and ostensibly during that time period no one was allowed to produce the jars because of patent infringement issues unless they were granted permission by Mason, or the licensed holder of the patent.
In any case, throughout the next 60-odd years, production of jars with the Nov.
They are commonly seen for sale at antique malls, farm auctions, flea markets, yard sales, and on online auction sites.
The very first versions with this embossing are believed to date from approximately 1913, with production continuing to about 1960.
30, 1858 embossing continued at a high rate, with untold tens of millions (or more) produced.
The phrase was soon considered an important marketing device, adding to the perception of quality and reliability of the container to the average consumer, and, at least by 1879 (21 years after the patent was issued), it is very likely that nearly every glass bottle factory was producing their own version.For anyone learning more about the different Kerr jar types and their market values, I would encourage them to consult the value pricing guide used by most advanced fruit jar collectors: the so-called “REDBOOK” of fruit jars.The Kerr glass plants were bought by Ball Corporation in 1992, (Ball later left the glass container business altogether, and sold the plants to Saint-Gobain Containers, now Verallia).I came across a vendor who had a variety of old blue jars with bubbles in the glass they were a Crown brand.He said they were German and had survived both world wars so he wasn’t going to part with them for less then each.CO” embossed on the bottom, and in general those jars probably date mostly from around 1904 to circa 1920.