5Y4G Philco by Sylvania NOS 1950 (53/40 and 56/40)

5Y4G Philco by Sylvania NOS 1950

54/40

58/40

(5Y4G/GT=5Y3GT with pin-out scrambled)

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