6j5 g tube nos nib neotron france preamp tubes quad valves 4 tubes = four pieces = 4 valves best in class ultra rare mint conditions made in France by Neotron NOS NIB tubes 6J5G into their old carton vintage boxes D getter bottom Black base black coated glass full shining flashed getter area great glass print Neotron FactoryOriginal genuine vintage production tubes made in France Superior tubes great for audio pre amplifier hi end sealed tubes from old factory productionjust one tube carton opened to check it wonderful excellent condition time capsule nos nib tubes from the same old production same tubes , ultra rare vintage vacuum tubes old production best sound , This is a great investment for your audio hi end system tested Strong emission, never used before, Tubes in Mint conditions, great sount for Preamp pre amplifier phono pre input stage, Triode driver stage input phono pre tested strong long life for best audio performances Socket Octal K8A Filament Heater Vf 6.3 Volt / If 0.3 Ampere / Indirect / Parallel / series ~ = AC/DC box 99
This example presents in exceptional unissued condition, featuring desirable black plates and an O-getter, hallmarks of premium British military valve construction built to exacting MoD specifications.
(2) Philco 6J5G Tubes Black Plates | Engraved Base | Late 1930s Production. Tested on an Amplitrex AT1000.