Supro Thunderbolt made by Valco, desirable tube recitified version. This example is strong with updated 3 prong power cord. The speaker and cone are original. Tolex has normal wear and tear. Supro logo is likely reproduction. This bass amp found its way into many guitar player's hands for it's bold tone.
Demo this amp in our showroom located in Portland, Oregon.
Transformer 5246516 (16th week 1965)
C15P Speaker 220448 (48th week 1964)