all i can find out n it is that it is from the 1960'S AND BARNEYS CASINO HAD THIS $100.00 CHIP AND THEN HARRAH'S CASINO MADE A BLACK AND WHITE CHIP THAT WAS A $1.00 CHIP SO BARNEY'S CANCELLED THERE $100.00 chip and stamped them no value and threw them away and turned some into souvenir's the back is stamped no value souvenir but its for shure been stamped over the barneys later in time i will attach some pic's