I once saw an ashtray from the downtown Monte Carlo sell for $3500...it should have sold for $500-$1000, at the time. I thought that particular auction might have been the case of a seasond collector "teaching a lesson" to a new ashtray collector (who had been bidding against him VERY enthusiastically for a few weeks or months...).

That aside...apparently the orange cards are scarcer than some of the other colors...and there are more varieties out there than I realized!

Found this page...

https://sites.google.com/site/cardconjurer/playingcards/vintagecasinoplayingcards/goldennugget