Boxer known as the ‘Boston Strong Boy’ (1858–1918). Scarce vintage fountain pen signature and sentiment, “Compliments of John L. Sullivan. Jan. 28th, 1898,” on an off-white 5 x 3 card. In fine condition, with uniform toning. A stong, bold signature of the powerful pugilist. Pre-certified Steve Grad/PSA/DNA and RR Auction COA.
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