1981 was a great year for collecting stuff. We had three companies instead of one. Topps was doing all sorts of sets. We got regular issue cards, the 5x7 Home Team cards, and the sticker set. We also got a cool "scratch off" set. By the time this series came out I was 14 and was kind of old to play the scratch off game.
This set featured a total of 108 players. The cards came in various three-player combinations and they were perforated for separation while playing the game. I ended up a few players short of a set back in '81 -- I'll need to check to see if any of these cards would help complete the set.
Nice touch by Topps to put the gum in an individual pack