That was a very helpful thread Darren. I had forgotten about it. I did find the front difference you point out on the two different color backs I have. The Clemente with the darker line under his chin and mark by his ear occurs on my whiter version

I am sure this print defect has shown up here somewhere before. A friend would like to know if our print experts have a theory on how both the white letters and the mark below his lips may have occurred

https://hosting.photobucket.com/imag...-30_153300.jpg

Another cloud variation card....two different recurring copies with clouds behind the bat, on one copy the cloud almost reaches the helmet, the other doesn't.

Not a variation, just an oddity. Maybe everyone else already knows. The main pics are reversed but the insert photos are correct

Another 71 Pirate, #212 Hebner and I think a tough one. Finally found a second card with this defect to confirm it's not some other mark. Small black loop in the lower right of the white inner frame.

EDIT: Very similar to the long known Reberger #251, though not as easy.

#283 Dick Such, with a black line through the "e" in "pitcher". Found a second one online here.

Got my bimonthly 'box of vintage low grade rando's' from my dealer last week and sorting through all the 71's in it. #328 here of Don Buford WS has this blotch next to "GAME" in the card title. I'm 90% sure it's original printing but I can't find a second copy readily to confirm if it is a variant.

#426 Chris Cannizzaro, with and without a bold black spot on his glove. A look at COMC suggests both versions are roughly equally common.

577 Lonborg, recurring but difficult bluish ugly splotch over ear. I don't think I've shared this before, apologies if it isn't new.

Not a recurring defect, but a print variation as the thread originally asked! Slight registration issues can make for amusing cards. Cook on the left looks freaked out, Cook on the right looks calm.

That 71 Cook is awesome, I will need to look for one.