Just discovered there are actually two different variations of the 1st issue Pearl Rewards White card from the Scarlet Pearl Casino in D'Iberville, MS. On the original card the C-00279254A manufacturing mark is 13mm wide. On the new found card it's 12mm wide with a slightly different font used for the text. Everything else on the two cards is identical.
Here's scans of the common front and the two different backs with the original card first and the new found card second. Notice the wider, fuller 'C' in the newer card with a tighter, narrower 'C' in the original card....