OK, who won this...and WTF is it?
 

https://i.ebayimg.com/images/g/i4gAA...AO/s-l1600.jpg

I'm gonna guess 1974 Topps Puzzle proof

I think you are right Adam. Looks like 1973 Pin Up format too but they had no logo

edit---and Pin Up pose is different, bat on shoulder

Seller says it is 7.25" tall and unidentified. I thought the pin-ups were about 4.5" tall and had a wrapper back.

I guess we know what a proof is worth. Now to find an Aaron...

The Pin Ups are smaller than the Puzzles, and the pose you posted is identical to the Puzzle pose and differs from the Pin Up pose. The Pin Ups, as you say were gum wrappers when in issued form and do have a product back?..and there were no logos on the 73 Comics or Pin Ups

1974 Topps Puzzle Proof
 

This is a puzzle proof. I have a couple of these (I think this Yaz actually). There were 6 or 8 of them on a thick cardboard sheet that I cut up years ago., Donato Divecchia had gotten the sheet just for the Nolan Ryan proof.

Cant tell if this one is on the thick cardboard backing. Might just be the thin glossy paper "skin" that was adhered to the cardboard. Either way, it is very cool!