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So as this is our page, we'll scan the Books for ones we reckon are interesting or noteworthy.
Starting in 1956 many valve amps will be 3 watt tiny Mono things, these are interesting to try & we had one years ago.
ORIGINAL RCA RADIOTRON TUBES NOS QUANITY 2 GOOD LUCK TO THE HIGHEST BIDDER! THESE GUAGES ARE FOR THE CLASSIC 1960 CHEVY IMPALA. BUYER PAYS SHIPPING, CHECKS MUST WAIT 10 DAYS BEFORE SHIPPING.
The four inputs are closer together than the later models and these early amps also had a polarity switch like the Early Bassmans that inspired Jim.
The ally 1st series front panels with black text did not have the JTM45 printed, there were no rear panels so the serial number & mk II was printed into the rear of the alley chasis,often the word Lead, Bass or PA was crudely scratched on. The amp above is #28 Late 1962 although it went back to the Marshall factory to have a new mains transformer in 1965.
After the off-center prototype came the first production JTM45 amp heads, the first 40 made had a full white Vynair cloth fronts with smooth black tolex,metal logo, RS transformers, large black choke, leather handle and black pitched top Bulgin knobs.
This amp still has its original grey RS Caps which pre date the Mustards.