I just started gathering some plain old clay poker chips for a video shoot I'm working on in a few months and one of the lots I ordered that I though would be all plain came with a few chips with numbers on them. I really like them and would like to get some more but I have no idea who made them, what they're called, or what they're worth. (I paid about a nickel a piece for them and think that was a steal) but I don't have that many. I put the best of each chip in a plastic air-tite holder.

Any information would be greatly appreciated.

Thanks,
-Brian