How to Find the Value of Old Vintage Mason jars and canning jars, like any other collectable, can range in value between only a few dollars and several thousand dollars.Though many of us would like to venture into grandma or grandpas old fruit cellar and discover a jar that is worth several thousand dollars, the odds are against us.The familiar term Mason Jar came after its inventor, Mr. Mason, who, at age 26, was a tinsmith in New York City.He perfected a machine that could cut threads into lids, which ushered in the ability of manufacturing a jar with a reusable, screw-on, lid.
Kerr, in 1915, created a flat metal disc lid to fit onto a Mason jar to use with other canning jars. Look for the Kerr name, which is embossed onto the surface. If the base is smooth at the jar's lip, it was made by a machine after 1915. A number is usually embossed on the jar's bottom, dubbed a "mold number." This will refer to the blower and his team. Look for small scars at the bottom and look to see if the design is more modern.Apparently you can use Mason jars to make centerpieces and glassware at your wedding, layered salads, lighting fixtures, air fresheners, flower vases, soap dispensers…They are even making a new version of vintage blue canning jars…These jars carry the familiar embossing "Mason's Patent Nov. This date refers to the original patent date, not the actual date of manufacture.Jars carrying this embossing, often with other monograms, numbers, letters, etc., were widely produced until about 1920. The identities of many actual manufacturers are unknown.