6K7G, MULLARD, ZA3699, KTW62, KTW63, ARP15, NR31, CV1941, CV1100, VR100, VT-86A, FOR WS19, R1155, R107, T1304

6AS7G, MARCONIPHONE, A1834 CV2523, 6080, AUGUST 1971 MANUFACTURE

U52, OSRAM, BLACK BASE, HAMMERSMITH, WARTIME PRODUCTION, VT-244, 5U4G, 5U4

GZ34, Mullard, Fat Base, f31 B1C, Blackburn 1951 manufacture

220OT, COSSOR, BALOON ENVELOPE, 220HPT, ARP1, CV1118, NR39, PM22A, PP2, PT2, Pen220, PenB1, VR118

41MXP, COSSOR, BALOON ENVELOPE, TRIODE, ML4, PA1, 41FP, AC/P, 104V, TT4, LF4, 41MP, AC/P1, 054, CV1689, CV1161, CV1458, (Copy)