E88CC, VALVO BADGED, PHILIPS MINIWATT, WHITE PRINT FACTORY CODE, 7L9 A8B4 , HEERLEN FEBRUARY 1968 PRODUCTION

6922, CVC ECC88, RFT MANUFACTURE

6922, CVC ECC88, RFT MANUFACTURE

CV2492, MIL SPEC E88CC, MULLARD, GOLD PIN , WHITE PRINT, MITCHAM MARCH 1963 MANUFACTURE, E88CC

CV2492, MIL SPEC E88CC, MULLARD, GOLD PIN , WHITE PRINT, MITCHAM MAY 1967 MANUFACTURE, E88CC

CV5358, MULLARD, MIL SPEC ECC88, 6DJ8, , WHITE PRINT, BLACKBURN FEBRUARY 1968 MANUFACTURE, 6A2 B8B4