Each graded either 55 VG-EX+ 4.5 or 45 VG+ 3.5 by SGC. Extremely scarce quartet of 1955 Baseball Exhibit Postcard Back cards. Includes: SGC 55: (2 cards) with Mitchell (only graded, Mutoscope back), Roberts (1 of 2 graded); SGC 45: (2 cards, both only graded with Mutoscope backs) including Ennis and Sauer.