Something I noticed about the '52 Topps Mantle (Var. A)
 

This may not serve much purpose, but I noticed that the right side black border on the Variation A '52 Topps Mantle actually curves or bends inward as it runs toward the bottom of the card (see image for example). The right border on the Variation B Mantle runs perfectly straight.

Maybe this is one way to detect counterfeits, as some fakes will not exhibit this odd feature if it's trying to mimic an authentic Var. A Mantle.

This might also help explain why the centering can sometimes look a bit odd on the right side of the Var. A Mantle card, creating the illusion of a slight tilt on only that side.

I wonder also if anyone else noticed this before.

http://photos.imageevent.com/ltsgall...%20compare.jpg

52 Mantle
 

Good catch Chuck. There are several front differences in the two cards, and now one more

Never noticed this. Wow!
As i only have the 'B' Var...i diffently be watching for my quest for 'A'

Good detective work there, yessir!