1 Sylvania 55 Vacuum Tube -RARE Globe Style 1930’s Triode-DuoDiode for AM Radios

By |July 23rd, 2026|

The 55 is a receiving triode / duodiode. There are scratches on the base. Triode section reads 40 – min. 1 Sylvania 55 Vacuum Tube. Diode sections read 54/52 – min.