Made in Chicago USA by the Valco Company, the same manufacturer that made all the Supro, Oahu, Gretsch and Airline amps in addition to some Harmony and Silvertone amps as well.
This one is all original right down to the 2-prong plug and RCA tubes. Tubes are one 6V6GT, two 12ax7, and a 5Y3GT rectifier. I'm using a 1995 Fender Standard Strat MIM for this demo.