The signature was from an autograph book.
The TT as Geoff Duke Sees It 1951 Original Pamphlet
GEOFF DUKE. ORIGINAL AUTOGRAPH ON PRINT PLUS POSTCARD
GEOFF DUKE ISLE OF MAN TT MOTORCYCLE RACING MOTORCYCLIST 1951 ORIGINAL PHOTO
"SIGNED GEOFF DUKE : MOTOR-CYCLING PERSONALITIES PAST AND PRESENT" Book
