While I wait for my friend Brian to comment, I'll share (again) about my 1971 Topps set of "Pin-Ups". A couple of years ago at out local monthly show, a dealer was selling a near set of PSA graded pin-ups (31 of 32 missing only Dick Butkus). I guess he was tired of lugging them around because he sold them to me for $100. I picked up a graded Butkus, and now own the #2 position in the PSA Registry (only two full sets registered).
Thumbs up for the 1971 Topps set!