There are three distinct versions of the 48 Back cardback. The first version (48a) was pretty standard.

The 48a cardback is the only one to show unobstructed art work for figures in the 45 and 47 Back assortments.
 

48a

 
Later assortments would release “refresh stickers” with current promotions to be affixed onto older stock. These stickers would create additional versions of this cardback not showcased here.
 

48 Back Cardbacks