6C5G,MATCHED PAIR, WHITE BOX, CV581

CV2492, MIL SPEC E88CC, MULLARD, MATCHED PAIR, SAME FACTORY CODE, 7L1 RAC2, MITCHAM MARCH 1963 MANUFACTURE, E88CC

PX4, OSRAM, TALL COKE BOTTLE SHAPE,, PP3/250, AC044, PX4

PX4, OSRAM, CHROME PLATE, PP3/250, AC044, PX4

U52, GEC, BLACK BASE, HAMMERSMITH, JUNE 1953 PRODUCTION, VT-244, 5U4G, 5U4

CV378, COSSOR, ELECTRONIC TUBES, HIGH WYCOMBE FACTORY, 53KU, BROWN BASE, AUGUST 1952 PRODUCTION