Duane "Duke" Maas was a right-handed pitcher who spent all or parts of seven seasons (1955–1961) with the Detroit Tigers, Kansas City Athletics, and New York Yankees. Maas was a member of the 1958 World Series champion Yankees. He saw action in one game, relieving Bob Turley during the first inning of Game 2 when the Milwaukee Braves scored seven runs. Maas died in 1976 in Mount Clemens, Michigan, at the age of 47 from complications due to arthritis, making his signature a tough one.

Offered here is a signed 3x5" index card from Maas, with his signature written in blue pen ink and Authenticated by PSA/DNA. He added to inscription "Best Wishes" for good measure.