Great condition Tremolux head from the blackface era, before Fender was purchased by CBS. The Tremolux serves as head version of a Vibrolux, without reverb. The headshell has modern era grillcloth, most likely changed in the recent past. Internally things are mostly original, and it has a changed power cord, electrolytic caps, a couple power resistors, along with the ceramic caps in the tone stack (changed to silver mica). The tremolo optocoupler has been changed as well, but the circuit is otherwise original, and has retained its coveted "blue molded" Ajax caps.