I found 3 of these about a month ago from a guy who oddly had 3 of these, 10 $5 chips, and 5 $1 chips. What a wierd combination to find, no $25 or $100 chips. He said his mother was from Reno and he found them in some of her things after whe passed away. The 2-3 known came from James book, so now there would be 5-6 known. Hope this helps.