The 2019 Topps Gallery - Hall of Fame Gallery Willie Mays #HOFG-15 is a sports trading card featuring Hall of Fame baseball player Willie Mays. This insert card is part of the 2019 Topps Gallery set and showcases Mays during his time with the San Francisco Giants. Manufactured by Topps, this card is a valuable addition to any baseball card collection, especially for fans of Mays and the MLB.