460BU, COSSOR, BLUE DECAL, 1940S PRODUCTION
460BU, COSSOR, BLUE DECAL, 1940S PRODUCTION
A very nice example of this rectifier type - rarely seen and showing superb emission from each diode section within the envelope
460BU, COSSOR, BLUE DECAL, 1940S PRODUCTION
A very nice example of this rectifier type - rarely seen and showing superb emission from each diode section within the envelope