We originally had one red/gold New Gaming Society Slot Club card listed from the Club Cal Neva Casino in Reno, NV with a WHITE BORDER (4th issue). I've just discovered another variation of that card. On the originally listed card the reverse logo said "Club Cal Neva, Reno's Best Bet. On the newly discovered variation, the revere logo is the earlier "Club Cal Neva - Virginian Gaming Society Slot Club" logo. Both cards have identical fronts.
Here's a scan of the common front and the newly found plus original backs.