Thanks for your help Gene. The antique dealer hasn't been much help, but I plan on visiting him again in a couple of weeks (last time I was there he told me he'd try and track down contact information on the guy that brought the chips in). I've also done some independent research on the internet, with no luck.

I'll keep plugging away--I'll keep you posted.

BTW - would you happen to know of anyone that might have quantities of JTC diamond mold chips they'd be interested in selling or trading for? I'm trying to put together a usable set of this style chip for my personal use.