Model/Circuit Number: Years of Production: 1972 – 1981 Era: Silverface Configuration: Combo Controls: Silver, forward facing w/ blue labels Knobs: Black skirted w/ chrome center, numbered 1 – 10 Faceplate Front: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass – Vibrato: In, In, Bright Sw, Vol, Treb, Bass, Rev, Speed, Intensity – Master Vol [...]