
McVitie Weston valve collection, Western Electric valve, type 1-A

Western Electric valve, type 1-A, spherical glass envelope 2.2in diam with side tube 1.2in diam x 1.3in long carrying circular loop wire anode, parallel side-tube for cathode, metal unknown, marked 81281, (RMW/P38 - McVitie Weston number), by Western Electric Company Limited.