Description
Pair of genuine Western Electric 274A with engraved letters on base.
Both have same design and plate circa 1932.
Two version were made, the 274A and 274B.
The 274A had four pin base UX4 like a 300B amd we offer a pair of 274A this time.
The 274A is a directly heated rectifier where the filament is used straight as the cathode.
Filament 5 Volts was made for full wave rectification
Both valves are in MINT condition and never been used
Tested with AVO VCM 163
Western Electric 274A tested A1=A2 100% emission
Western Electric 274A tested A1=A2 100% emission
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