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274A Early type STC 4274A Standard Telephones and Cables UK made full getter HOLY GRAIL sought after pair full wave rectifiers

STC W.E. 4274A Red Paint F on glass GBP 2,800 pair.

274A Early type STC 4274A Standard Telephones and Cables UK made full getter K 14 type HOLY GRAIL rare pair full wave rectifiers

STC 274A STC 4274A audio rectifiers £ 2,800 pair

274A STC 4274A Red print HOLY GRAIL Standard Telephones and Cables pair full wave rectifiers tested 100%

STC Western Electric 4274A £ 2500 pair

274A Western Electric 274A HOLY GRAIL of all audio rectifiers UX4 base super rare engraved print on base tested 100%

Western Electric 274A £ 4,500 pair

274B Western Electric 274B engraved letters on base HOLY GRAIL U52 5U4G full wave rectifiers tested 100% pair

Genuine Western Electric 274B engraved base £ 4,000 pair

275A Western Electric balloon – VT52 Western Electric ST fat shape Holy Grail audio valves tubes

275A Western Electric balloon GBP 3,500 pair.

275A Western Electric ST fat shape GBP 2,000 pair.

2A3 ARCTURUS Engraved logo on base Holy Grail of audio valves MONO plate limited edition audio output pair triodes

ARCTURUS 2A3 Engraved logo MONO plate £ 1,000 pair

2A3 Brimar BVA Export valves black plate large getter Holy Grail quartet audio valves

Brimar Export 2A3 BVA £ 700 quartet

2A3 Brimar BVA Made in England “parallel plate” Holy Grail super rare matched quartet 2A3 with original boxes!

Brimar 2A3 BVA Made in England £ 1500 quartet