DS, signed “G. M. Steinbrenner,” one page, 8.5 x 11, no date but circa 1975. Unexecuted supplemental contract between the New York Yankees and catcher Thurman Munson. In fine condition. The 1975 season was one of the greatest of Munson’s career, batting .318 and being named the American League’s starting catcher of the All-Star Game. Pre-certified Steve Grad/PSA/DNA and RRAuction COA.
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