Matching Pair Dukane Model 1A753 Solid State Amplifiers, 2 Channel Amplifier, Class 2 wiring operable. Western Electric/Dukane. 

1920, 20s, 1930, 30s, 1940, 40s, 1950, 50s, 1960, 60s, 1970, 70s. Part(s) shown in pictures will be the exact part(s) you will receive.