Rare New Old Stock (NOS) 6J5 valves from Fivre, manufactured in Italy and selected exclusively for military use in the late 1950s. These are not commercial tubes — each unit bears official military markings on the glass, including tax-exempt labels issued by the Italian government.

All tubes share identical production stamped with code M7 on the glass and labeled with military green tags dated 26 June 1958. Features include:

• Mono plate construction
• Grey ribbed plate with welded structure
• Copper internal rods
• Square getter at the bottom
• Shining full metal base
• Clear, unstained glass envelope

These unused NOS units were preserved in original military storage and are now available as matched quads or pairs. Each valve is individually tested for transconductance & emission over original datasheet specifications.

Request Details