One funny thing is, I believe that the your coin grading scale (MS-65) DID NOT EXIST when the gios coins were first issued !!
Secondly, wouldn't GIOS coins be just about the easiest bikepart on earth to reproduce? I mean, just take a wax casting of it, then you need some sort of plastic (like lucite acrylic) that can be molded at room temperature. Imagine a clear coin with gold underneath, that would look waycool !!! Or, just spray paint it gold once it's dry.
- Don "Coin before Bike Collector" Gillies San Diego, CA