Princess Leia Proof Cards and Cromalins: This is quite an incredible shot. Imagine owning all of the following (from left to right, top to bottom):

Top row: 12 Back (no offer) with 4 square corners and no printing on the back, 12 Back (no offer), ESB 21 Back (Secret Figure offer), 31 Back (no offer), 45 Back (Display Arena offer), 47 Back (4-LOM offer), and 48 Back (Revenge of the Jedi - Admiral Ackbar offer) sample card.

Second row: Revenge 48 Back (Nien Numb offer), Revenge 65 Back with 4 square corners and no printing on the back, Revenge 48 Back with Nein Nunb paste-up on front, ROTJ 65 Back (no offer), 65 Back (no offer) with figure mounted, POTF, POTF with 4 square corners and no printing on back, POTF cut from sheet.

Third row: All cromalins; 12 Back (no offer), 20 Back (Boba Fett offer), Revenge of the Jedi (Nien Numb offer), Revenge of the Jedi (no offer), and Return of the Jedi (no offer).

It's quite amazing that all of these pieces are even around today, and to have all fourteen of these proof cards, five of these cromalins, and one carded prototype in one collection is like having lightning strike twenty times in the same place. In addition, Leia is one of the most difficult to find carded figure in the later years of the Star Wars line. The carded ROTJ Leia is a prototype (notice the square corners at the bottom), probably created for a catalog photo or Toy Fair display.