I have a sample set of these -- as I must!
I don't know the story on these. Are they from a casino, or just someone's personal hotstamps?
I see them pop up quite regularly -- maybe because I get tagged, haha
I once had the opportunity to buy a playable set (albeit an ultra-weird breakdown), but the price seemed kinda outrageous for hotstamp solids, so I passed. Would have been neat to have them, but it was well, well above my price point on something like this, even if it does have my name written all over it