I did a little inquiring after my last post on 1955 Topps All American Football and it seems whatever reasoning went into determining the Short Prints in this set went out around the advent of the USB 1.0 era. 20 overprints is indeed the consensus and that would mean for every full press sheet of 220 cards, 20 appeared three times and 80 twice. I'll have to leave it at that since I don't own a price guide business and can't determine why bad information continues to persist in some quarters.
So with that, I will leave you with some eye candy. The standard Trading Card Guild cello box of the era looks like it came with a nice, colorful header card. Perhaps they came with every issue that was cello-ized; that deserves some research real soon.
That scan is from the PSA site and the story there about the cello box find of 2008 is worth reading. And I should have shown it last time but here is the famous card of The Four Horsemen: