Radio valves for Gecophone two valve radio c 1924
Date Added: 18 October 2010
Year: 1924
Institution Name: dnhhl
Cat No: ◀ | 2010_096_02 | ▶
Picture No: 9717
Second of two Marconi Osram valves stamped ‘Type approved by Postmaster General’ and marked ‘BBC’
Dimensions: Height 106mm - Diameter 44mm
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