These chips are not marked at all. The only thing that separates them from one to the other is the color only. Blue,red,yellow,gray or white. I just had them out & counted them. I have 300. How would I find out what the colors were worth on the table? The yellow ones seem to be in the best condition. The red & blue seemed to be used the most. The gray ones though have two different sizes. Very little difference, but different. They are rounded on the edges except the white ones not mentioned yet because they are different. They do have an edge & an imprint on one side of a tiny star. Not sure what they are made of. Ever see them? Thank You. Dorena