I have every card from the blank print run (Japan) except 07-16 which is Mickey Mantle/Roger Maris, I have all cards from deck "B" and from "C". I have no cards from the "B" print run. I only have four cards from the blank print run from Italy.
Here are the back variations I've seen. There are probably a few more since I don't have any cards from the "A" print run.
7-02 Willie Shoemaker - 'B' and 'C' have added text
7-04 Don Schollander - 'B' and 'C' have different awards
7-14 T&F The Morat to Fribourg Racer - 'B' and 'C' have added text
7-17 Brad Park - 'B' and 'C' have different awards