Hello,
The only way to determine the value, is to receive a firm offer to buy.
Ideas of value can be obtained by studying recently completed auctions, but I doubt that you'd be able to find an item exactly like your's.
I believe that the two error coins are what collectors would be most interested in, especially a proof half dollar struck through "
cloth-which is still there".
That's something that I don't recall ever seeing.
Good luck.
"Aren't you suppossed to be out driving a truck or something jody?"
amrad78