If you read the description on this '56 Mays, the sellers states it was "power erased." Can anybody enlighten me as to what that means??? My apologies, since the Mays card is not prewar, but perhaps the eraser concept might be prewar relevant.
http://cgi.ebay.com/1956-TOPPS-WILLI...-/330502052215
By the way, kudos to the person who "power erased" this card. At least they were considerate enough to mark the back side (sure wish all card doctors were so thoughtful).
Lovely Day...