Knox mason jars were produced in the United States from 1925 to 1935. Since they are considered antiques as of 2014, owners can expect to get around $5 for pint jars, $10 for quart jars, and $20 to $50 for gallon-sized jars.
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A single half-gallon blue mason jar by Ball sells for around $17.00. This is providing the jar has no rust stains, hard water marks, chips, or cracks.
I found an 1858 patented Mason's jar and would like to know the value if any?
The date is the patent date, not the manufacturing date. Many jar manufacturers used the mason jar patent. The value will depend on the condition and the actual size - how many gallons, quarts, etc. I have been researching the value of a 7 gallon jar with the same date and with an eagle on the other side. The value appears to be between 25 and 50 dollars. The jar is a new one. Only 25 or 30 years old. That should give you some idea. The reference below is a history of the fruit jar. It has a section on how to date your jar. Found it just after I answered your question. http://www.fohbc.com/FOHBC_References3.html
You need Modge Podge, which you have the choice of matte, shiny, glossy, etc. You can find it in the arts and crafts department at your local Walmart. Ive been trying to paint Mason Jars for a little while and experiment with different things. But Modge Podge is a must. I have tried food coloring for color!
It depends upon the material of which the jar is made. If it is made of glass, as virtually all jam jars are, it is not biodegradable.