I actually believe them to be Roulette markers in several denominations and most likely from the 60's or very early 70's.

I have 3 full sets of 5 colors for sale or trade @ $20 each postage paid (Within the US).

I also have several singles of the Red 25 and Blue 12.5 available for $5 each.

Please email me if you have any interest.

Thanks,
Doug