A friend just gave me two boxes of chips. The original box they are in says "Masons plain round edge" Mason and Co. Newark NJ USA. They are exactly what they say they are, no inserts, denominations or molds. They are all red white and blue. I dont know what they are made of but they are fairly light weight and are very old in appearence. They are not plastic. The box shows them as 1 and one half and quanity as 100. Can anyone date them for me? Thanks, Don