1968 Topps Proof Bob Gibson card. The card has been authenticated and encapsulated by SGC as Authentic. The image of Gibson shows him with a glove on his left hand while throwing with his right. Gibson tried getting Topps to produce a card with his opposite throwing/catching. Topps caught the error/variation in pre-production and pulled this version from production. The card is one of a kind and blank backed. The reverse is marked 2 7/16 x 1/2 4/c + VAR 3-13-67. An amazing and superbly rare example which has survived the years in beautiful condition with bright coloring and a crisp, clear image of Gibson. A must for any Gibson collector.