Topps produced each Garbage Pail Kids series as a natural group of 88 cards, 44 each of the "a" and "b" variety.
Often the numerical series has fewer than 44 cards, and the additional cards were planned from the beginning as variations.
Usually these "planned" variations show up as different back designs.
The 5th series had four back variations: cards 168a&b, 169a&b, 175a&b, and 178a&b.
A numerical set is 80 cards, a variation set is 88 cards. Configuration
: 48 Packs Per Box, 5 stickers and one stick of gum per packCard Numbers
: 167-206BBCE - Box has been authenticated by Baseball Card Exchange