Not sure what they are made of. Could be plastic, actually. I got them in 2005 at a garage sale. I was told at the time they were a old French set. They are quite small, but very cool. At the time, I only got 3 denominations, but I got the deer in two colors. The antique chip collectors only knew of a brown one, but I had a small stack of orange chips. They were all the same color, and same on both sides, same all over the chips so I would be very surprised if they were not manufactured orange. I sold a couple to individuals, then kept a few for myself and sold the remainder to a single buyer. Don't remember who it was, but I don't think it was a regular poster on the board.
Michael Siskin