Pictured are The Vintage Collection (TVC) Boba Fett and Darth Vader Proof Cards/Unused Cardbacks. Exclusive to San Diego Comic Con in 2010, these were given away to attendees. The Proof cards are unpunched.
Here is a picture of the back of the Proof Cards. These are relatively easy to find and provide a very affordable option when collecting Pre-Production items of the First 21 Characters.