I won a 1922-D Lincoln cent certified MS-63 RB. Granted, PCI certified it, but $41 seemed too good to pass. After the auction, the seller sent me this email; This morning I received the attached photos. Although the back is somewhat mushy (VERY common for that date), it looks to me like at least the left wheats have been struck through grease. How much does this affect the value? Should I go ahead with the deal? My gut says yes. Even AU coins go for $50+. Thanks in advance.