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ID = 62453
Tube type:  Full-Wave Rectifier inert gas filled   Power-supply 
Identical to H21

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Industrial
Filament Direct

Tungar bulb sold by Alsthom.
Source: Advertising in the magazine Vue special edition Radio September 14, 1932

Text in other languages (may differ)

Just Qvigstad
H21: Publicité/advertising/Werbung 1932
Patrice Zeissloff



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