Pro Hall of Fame football player (1896–1971) credited as being the first center to snap the ball with one hand. Ballpoint signature and inscription, “Best of luck to Robert R. Oppel, with continued good wishes, Sincerely, George E. Trafton,” on an off-white 5.25 x 3.25 card affixed to a slightly larger sheet. Small stain to top edge and faint postal cancellations, otherwise fine condition. Pre-certified Steve Grad/PSA/DNA and RRAuction COA.
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