VALCO MANUFACTURING COMPANY
THREE GUITAR AMPLIFIERS, CHICAGO, IL
SUPRO, circa 1966 - THUNDER BOLT S6420, circa 1967, height 19 in. (48.3 cm) - TREMO-VERB S6422TR, circa 1966, height 14 in. (35.6 cm) with cover; all bearing the logo Supro (4)
VALCO MANUFACTURING COMPANY
THREE GUITAR AMPLIFIERS, CHICAGO, IL
SUPRO, circa 1966 - THUNDER BOLT S6420, circa 1967, height 19 in. (48.3 cm) - TREMO-VERB S6422TR, circa 1966, height 14 in. (35.6 cm) with cover; all bearing the logo Supro (4)
