Produced by the Exhibit Supply Co. of Chicago, these 3-3/8x5-3/8" blank backed cards were distributed over a 20-year period. This card dates to 1957-61. The offered Mays card is the "Portrait" version. Mays (1931-2024) is widely considered a Top 5 player of all-time and was inducted into the National Baseball Hall of Fame in 1979. The bold felt tip pen signature garnered a perfect "10" autograph grade from PSA. At the time of cataloging, PSA/DNA pop report indicates that this example is one of only four signed examples ever graded by PSA w/only one graded higher.