Eddie Miller's signature garnered a perfect GEM MINT 10 according to PSA/DNA on this 1940 Play Ball card.  The card originates from the Shibe Park collection of autographed cards, an original owner collection carefully collected by a teenage boy who, in 1939 and 1940, obtained many autographs from players arriving at the train station near Shibe Park, and continued for many years to obtain signatures in person and through the mail.  The signature appears to have been signed in fiber-tip marker; a 1939 Miller card elsewhere in this auction signed in the same ink leads us to believe that this is a later signature.