I'm not a Mantle auto expert, but the guys in the autograph board are. They could give you advice on those. My first guess is that they are all forged "banana M's."
Here are some of the others:
Too grainy of an image to tell for sure, but kind of looks like distressed crazing
Centered, rounded corners, and over bright?
Centered, rounded corners, and WST/bleedthrough doesn't look like it's in the right place on back
Jordan: Yellow ribbon looks same color. No back picture to see if other signs of fakes present
And would someone really consign Goudey Ruths and a T206 Eddie Plank (isnt a Piedmont 350 back impossible?) to this auction house? They can't even spell basic words correctly. Maybe I should email my contact at FDLE in consumer fraud.
The Goudey Ruths are all counterfeit, even from these awful scans. I would not bid on anything in this auction, if I was you.