I originally inherited these chips, about 20 or so. from my grand father about 20 years ago. He lived in Los Angeles for 40 =50 yrs. and traveled frequently. I just brought them out about 3 years ago when I started to seriously collect chips I've traded some and given some away as gifts to other collectors. I recieved my information from a well known CA dealer and had no reason to question his attribution as he had some 49 Camp of other colors.That's all I can contribute.