1968 Topps Baseball Complete Set. 9 of the cards are PSA graded, each with front and back pictures provided.. NOLAN RYAN ROOKIE (w/ JERRY KOOSMAN). Like the cards above, the net overall grade of this fine set is ExNrMt. The item "1968 Topps Baseball Complete Set PSA RYAN MANTLE AARON MAYS 598 cards ExNrMt" is in sale since Wednesday, December 12, 2018.This item is in the category "Sports Mem, Cards & Fan Shop\Sports Trading Cards\Baseball Cards". The seller is "loberl4hwm" and is located in Glendale, California. This item can be shipped to United States.