you probably got it from my brother who it from me. october 2016 (my 2nd las vegas trip ) we were in the mirage and he told to play this table ,a $25 single zero table. this is the only table with the roulette mold chips. all the common tables were 24 line bj chips.i got 4 or 5 and gave him 1 or 2 so you may have gotten it from him.