Mullard Magic: For All Your Vintage Valve and Radio Needs!
EL33 MATCHED PAIR OF MULLARD OLD SHIELD WHITE LABEL
EL33, MULLARD, OLD SHIELD, WHITE PRINT, PENTODE, 6AG6G, 6M6G, BVA266, CV2938, KT61, N147, PP6BG
KT61 OSRAM BLACK BASE FROM NOV 1953
KT61, MARCONI, BLACK BASE, JULY 1946 PRODUCTION
N147, EL33, MARCONI, MATCHED PAIR, BLACK GLASS, BLACK BASE, WHITE PRINT, MANUFACTURED 1953