McVitie Weston valve collection, Tungsram valve, type H210
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Tungsram valve, type H210, oblique electrode system
Science Museum Group
© The Board of Trustees of the Science Museum
Tungsram valve, type H210, oblique electrode system, (RMW/E63 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd..
