RCA Radiotron valve, type 803, pinch marked 803 35699, ceramic 5-pin base, (RMW/J153 - McVitie Weston number), by RCA Corporation, 1935.
RCA Radiotron valve, type 803, pinch marked 803 35699, ceramic 5-pin base, (RMW/J153 - McVitie Weston number), by RCA Corporation, 1935.