Square jars, for example, were made by many manufacturers as early as the 1890s.Although they took up less space in the pantry they were never as popular as the regular canning jars and so are a little rare making them a little higher in value.Here are some antique canning jar values found recently on the Internet.These should not be considered true values but are supplied to give you an idea of the worth of canning jars.Jars actually were embossed with this for over 50 years so the embossing in itself should not be the sole criteria for determining date and value.
in 1915, created a flat metal disc lid to fit onto a Mason jar to use. Embossed symbols and markings on a glass jar help determine the jars.If you can your own fruits and vegetables, you might be surprised to find that the value of old canning jars is often significant.If you are using the ones your grandmother left you, that jar of spiced peaches might be worth more than you think. How to Identify Antique Glassware Markings Repurposing Glass Bottles in. Collectors Guide To Old Fruit Jars Red The Knox Glass Bottle Co. phrase MASONS PATENT NOV 30TH 1858 found on canning-style jars..