Rare NOS Matched quad Mullard EL37 / CV586 Grey Glass, Twin Trough Getters, Black Base Valves Vacuum Tubes - AVO Testedvery strong. R61 / R8I, matching September 1958 Date Codes, Blackburn, UK manufacture.
EL34 SVETLANA GENUINE 'WINGED C' NOS MATCHED QUAD
Matched Quad Brimar Foreign 5881 6L6GC Valves Tubes NOS
12AT7WA ECC81 PHILIPS MULLARD NOS MATCHED PAIR VALVE TUBE
EF86 Mullard Foreign Holland Valves Tubes NOS Matched Pair Original Box (9B16)
Matched Pair Mullard KB/D M8080 CV4058 6C4 Box Plate Valves Tubes NOS Boxed
Matched Pair Mullard GZ32 CV593 Valves Brown Bases R71 Codes NOS MOD Boxed
