Card artwork is sometimes called "Tatooine" or "blue."
Series had 48-, 65-, 77-, and 79-back iterations.
* 65C-BACK (PBP, Spain)
The number is referencing the number of other action figures previewed on the cardback.
One 79A-BACK (C-8.5 condition unpunched) sold for $938 in Sotheby's "Return of the Nigo" auction on December 11, 2015.