Sorry for the bad pun, but I've seen several of these chips on ebay the past few weeks. They came from Wong's Silver Spur, a real dive of a club, located in a quonset hut in Helena, Montana during the 1970s. There are five chips in the set: 25c, 50c, 1.00, 5.00 and 10.00. They are nice chips, but not Nevada. B-diamond mold chips were never issued or approved in Nevada, as far as anyone knows.