For decades, autograph collectors have gotten these Hall of Fame Plaque Postcards for signatures. CGC and @jsaloa are excited to announce collectors can now get the signed National Baseball Hall of Fame Plaque Postcards for autograph authentication and encapsulation. Head to… pic.

For decades, autograph collectors have gotten these Hall of Fame Plaque Postcards for signatures. CGC and @jsaloa are excited to announce collectors can now get the signed National Baseball Hall of Fame Plaque Postcards for autograph authentication and encapsulation. Head to… pic.twitter.com/irdYewIfh5

— CGC Cards (@CGCCards) March 24, 2026