Home:  Post Office: GPO VT No 4 VALVE, 1920's

GPO VT No 4 VALVE, 1920's

View all Post Office

GPO VT No 4 VALVE, 1920's

GPO VT No 4 Valve, a Triode of the 1930's on an American UV4 pin twist on base.

Add a memory or information about this object

A0640



©2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No. 1140352, Accredited Museum No. 2221