I know of steel slot tokens, but no cast iron tokens, Steven. Are you talking about the ones with characters and logos punched into them, like rusty one shown below?

I like tokens as well, but why not post discussion of them here on Greg's board? I don't see the need for a separate way to pass around info just because they are metal and not clay. If there are enough threads on the subject, Gregy might even be persuaded to create a separate "thetokenboard", although I don't really see the need for it right now.