Maestro FZ-1A Fuzz-Tone Model Distortion Pedal Effect, made by Gibson, c. 1964, made in Kalamazoo, Michigan, serial # 13658, medium brown enamel finish, stamped metal housing.
Overall length is 6 in. (15.2 cm.), 3 in. (7.6 cm.) width, and 2 5/8 in. (6.7 cm.) high. Excellent - Condition.