Since I primarily collect amps by Fender, and guitars by Gibson, Fender, Martin, National, Epiphone, Gretsch and Rickenbacker, I really can't help them with these other less popular brands. As you have probably noticed, there is plenty of information here to help date the brands that I am interested in. But where does that leave everyone else? Well I'm not one to leave you out in the informational cold, so here's something that I use quite often in dating amplifiers and electric guitars.
The History of the Magnatone Amplifier
Kay Musical Instrument Company - Wikipedia
This screamer is paired with a rare blue Tolex Supro t amp. Then, as now, guitar players wanted to be heard, and that desire drove the development of these resonator guitars and the electric guitars and the amplifiers that would soon follow. Rickenbacker had founded Ro-Pat-In Corp. He worked at National, and later at Dobro, and was largely responsible for the production methods that made it possible to mass-produce metal and Bakelite guitar bodies.
Kay Musical Instrument Company
The company produced instruments in its plant until , when it ceased operations after a brief merging with Valco. The brand has been used by several manufacturers since then, mainly attached to Japanese import guitars. Kay offered their first electric guitar in — five years after the Rickenbacker Frying pan , and the same year as the Gibson ES
This same McKinney amp can also be found in the National catalog as model What makes this amp interesting and probably historically important is that it was one of the first Valco guitar amps to use 6L6 power tubes. These two models were certainly the top-of-the-line guitar amps in their day.