I see no evidence whatsoever of any alterations on this card. I believe this card should be graded as a 6.5.
1952 Topps #311 Mickey Mantle Rookie RC - SGC Authentic
Robert Edward Auctions - The Premiere Sports Auction House
Mickey Mantle Beckett Signed 1952 Topps Rookie Porcelain Card #311 Autograph 9
Lot #8181 1952 Topps #311 Mickey Mantle Autographed Rookie Card - PSA/DNA MINT 9
Mickey Mantle Autographed 1952 Topps Rookie Porcelain C
Mickey Mantle '52 Topps #311 Card Up For Auction, Expected To Fetch $1.5 Mil
Lot Detail - 1952 TOPPS #311 MICKEY MANTLE AUTOGRAPHED PSA/DNA GEM MINT 10 (AUTO.)
Topps Mickey Mantle #311 Values - MAVIN
1952 Topps #311 Mickey Mantle Autographed Rookie Card - PSA/DNA MINT 9
A 1952 Topps Mickey Mantle Rookie Baseball Card No. 311 (PSA 1)
Topps Mickey Mantle #311 Values - MAVIN
Mickey Mantle Beckett Signed 1952 Topps Rookie Porcelain Card #311 Autograph 9