Rare New Old Stock (NOS), Never-In-Box (NIB) 6N7G twin triode valves from Visseaux, manufactured in France during the 1940s for military aviation use. These are not commercial tubes — each unit was selected under strict military specifications and bears official AIR Force markings.

All tubes share the same production code “LY” stamped on the glass, confirming identical origin and matched performance characteristics.

Key features:

• Factory sealed in original individual plastic wrap — untouched since production
• Comes with original cardboard box labeled for French Air Force use
• Military-grade construction with robust internal structure
• Time capsule condition — never powered, never installed
• Ideal for high-end preamplifier or driver stages requiring low noise and high linearity

These valves represent a rare intersection of wartime engineering and audio excellence. Each unit is individually tested for transconductance & emission over original datasheet specifications.

Available as matched pairs or matched quads upon request, with full documentation and provenance.

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