There is now a fourth variation that has been found of the 2012 Harrah's Total Rewards cards.

The original cards had 3 lines of text at the bottom of the reverse with 4 phone#s in the bottom line.

Then we found cards with 3 lines of text at the bottom of the reverse with 5 phone#s in the bottom line.

There were also cards found with 4 lines of text at the bottom of the reverse with 4 phone#s in the bottom line, 7 phone#s total in the bottom two lines.

Now we've found cards with 4 lines of text at the bottom of the reverse with 9 phone#s total in the bottom two lines. There are still 4 phone#s in the bottom line but the second line from the bottom is now much wider.