Baseball pitcher (1891–1914), manager (1901–1920) and team owner (1920–1955), known as the “Old Fox,” who was inducted into the Hall of Fame in 1946. Ballpoint signature, “Clark Griffith,” on an off-white 5 x 3 card. Signature is encapsulated in a hard-plastic PSA/DNA authentication holder. In fine condition. R&R COA.