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RCA (Grass Instruments) 5V4GA Full...
RCA (Grass Instruments) 5V4GA Full...
RCA (Grass Instruments) 5V4GA Full...
RCA (Grass Instruments) 5V4GA Full...
RCA (Grass Instruments) 5V4GA Full...

RCA (Grass Instruments) 5V4GA Full wave rectifier (1935) black plates d-getter

RCA 5V4GA

Full wave rectifier (1935)

black plates

d-getter

These tubes were specially selected for use in medical equipment by Grass Instruments corporation, founded in 1935 by Albert Grass, a medical instrument company specializing in EEG, epilepsy and sleep monitoring, and polygraph equipment.

Last items in stock
€150.00

 
Year of Manufacturing
1935
Condition
New In Original Box (NIB)
Label markings
Mint
Plate
black
Getter
D-getter
Glass
small
1 Item

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