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 12th series had three
back variations: cards 469a&b, 472a&b and 481a&b.
A numerical set is 82 cards, a variation set is 88 cards.
Configuration: 5 stickers and one stick of gum per pack
Card Numbers: 460-500