I've been researching this and determined PSA is covering up they've been compromised..
The fonts vary when the .5 grades started..Some barcodes are right on the border..The spacing is not consistant on every card..I have a 52 set (almost) and the flips vary..
Here's a Mantle from the CAL Craiglist scam..Unless you held this card in your hand, you couldn't tell..It's a type A with the missing border pixal, or very close..
The background is a bit light but hard from a scan or picture to tell..
LMK what you think..
1952-Topps-Mantle-Fake.jpg