Original 24K Select cards from Landry used at all their Golden Nugget properties had no manufacturer number on the back and the reverse phone# was 844.245.2728. The second wave of cards found had an 09200x number above the mag stripe on the top right corner of the back of the cards and the phone number was changed to 1.800.777.1177.

Now a different version of the original cards with the 844.245.2728 phone# has 888901 above the mag stripe on the back.

I've been trying to reach my contact at Golden Nugget corporate to get more information on these numbers and what they might mean but haven't had any luck reaching him recently.