Rio and Harrah's other properties issued WSOP cards. Here's a set that is dated 2005 on the backs:

If anyone has a Seven Stars WSOP card dated 2005 on the back with pocket aces on the front like the cards above I will buy or trade for it.

This Seven Stars card is dated 2005 on the back. It has a WSOP hologram on the front left top:

Here's the second set that was issued. The pocket aces pictures are smaller than the first set. The backs are dated 2006:

I know Gold cards were issued after these but I haven't seen any complete sets apart from these first two.