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ID = 72132
Great Britain (UK)
Brand: Ericsson Telephones / British Ericsson / Etelco (ETL); London
Tube type:  Voltage Reference Tube   Power-supply 
Identical to GD85M/S = CV449 = 85A2 = QS1209 = 0G3
Similar Tubes
Other class quality (otherwise equal):

Base Miniatur-7-Pin-Base B7G, USA 1940

83-87V reference tube.
Preferred operating Current: 6mA. Usable from 1 to 10mA
Incremental resistance: 450 ohms
Typical drift in voltage per 100 hours: <+0.1%

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