The rare card was stolen around Oct. 4 from a hotel in Farmington, N.Y., the Rochester (N.Y.) Democrat and Chronicle reported Tuesday.
The Wilson Franks, Ted Williams card was judged in very good to excellent condition by the Professional Sports Authenticator. Of the 106 identical cards known to exist, just 11 have been judged to be in that condition, State Police Investigator Mark Eifert said. Williams played for the Boston Red Sox for 21 seasons.
The owner has offered a reward and the card is rare enough that it likely could not be sold without arousing suspicion, Eifert said.