5Y4GA Sylvania NOS 1960”s (53/40 and 58/40)

5Y4GA Sylvania branded Zenith NOS 1960”s

53/40

58/40

5Y4G/GT=5Y3GT with pinout scrambled

– Zenith 5S-250 1938
– Zenith 10S669 1942
– Philco 38-4 radio 1938
– Philco 37-650 1937
– Philco 38-62 1938