1921 Exhibits George Sisler, signed by Sisler on the front. PSA has encapsulated the card and certified the signature as "Authentic." Sisler has boldly signed the card on the front in black fountain pen, with the signature grading 9/10. Signed 1920s-era Exhibits are scarce, especially those signed by prominent Hall of Famers such as Sisler. This is the first George Sisler signed Exhibit we have ever offered and we cannot recall the last time we have seen another at auction. The Exhibit is technically in Fair to Good condition overall, with light creasing, edge wear, and surface paper loss on the reverse, but is closer to VG-EX in its overall appearance.