Collectors have categorized those chips as antique poker chips. They are made of a clay composition and were made sometime between 1920 and 1945, give or take a few years. In quantities of 1 or 2, they are between $1 and $3 each. In large quantities they are much less, along the lines that you got them.

Posting here that you are interested in buying, may lead to some.

If your purpose is movie props, there are some here that might be able to loan or rent some to you.

Good luck.