The problem with that is without a pic we don't know if it is something good. Put up a picture and we can help you learn if it is something good.
Basically the same as "I have a coin; is it worth anything?" So, without a pic, your coin worth face. Even with a pic, I would venture face value, as any doubling would probably be MD.
I have a 1958 corvette. How much is it worth? $20,000? $30,000? But, when you see the pic, how much is it worth?: