Wade Bequest collection of valves: EIMAC type 15E radio valve
Wade Bequest collection of valves: radio valve U329
Wade Bequest collection of valves: RCA radio valve type 12SQ7
Wade Bequest collection of valves: RCA radio valve type 12SA7
Wade Bequest collection of valves: Edison model 501 type IJB-1861 delay relay radio valve
Wade Bequest collection of valves: type LZ319 / PCF80 radio valve
Wade Bequest collection of valves: RCA type 12SK7 radio valve
Wade Bequest collection of valves: type W729 radio valve
Wade Bequest collection of valves: Marconi-Osram Valve radio valve type Z63
Wade Bequest collection of valves: Marconi Osram type D77 radio valve
Wade Bequest collection of valves: Marconi Osram type B319 / PCC84 radio valve
Wade Bequest collection of valves: PCF80 type radio valve, probably by Marconi-Osram
Wade Bequest collection of valves: full-wave rectifier radio valve
Wade Bequest collection of valves: early triode radio valve
Wade Bequest collection of valves: early triode radio valve by Marconi-Osram, 1926
1926
Wade Bequest collection of valves: Early triode valve by Marconi-Osram
Wade Bequest collection of valves: early triode radio valve by Marconi-Osram
Wade Bequest collection of valves: early triode radio valve by Marconi-Osram
Wade Bequest collection of valves: Small R-type triode radio valve
Wade Bequest collection of valves: Small R-type triode radio valve without base
1917
Wade Bequest collection of valves: Small R-type triode radio valve without base
1916
Wade Bequest collection of valves: Very small triode radio valve
Wade Bequest collection of valves: Small R-type triode radio valve without base
Wade Bequest collection of valves: four-electrode radio valve by Marconi-Osram
1920
Wade Bequest collection of valves: early four-electrode radio valve by Marconi-Osram. With B4-3 base
Wade Bequest collection of valves: triode radio valve, by Marconi-Osram
Wade Bequest collection of valves: R-type triode radio valve
Wade Bequest collection of valves: experimental radio valve
Wade Bequest collection of valves: R-type triode radio valve
Wade Bequest collection of valves: full-wave recitifier radio valve
Wade Bequest collection of valves: full-wave rectifer radio valve
Wade Bequest collection of valves: early triode radio valve by Marconi-Osram
Wade Bequest collection of valves: early triode radio valve by Marconi-Osram
Wade Bequest collection of valves: small triode radio valve, by Marconi-Osram
Wade Bequest collection of valves: early triode radio valve, by Marconi-Osram
Wade Bequest collection of valves: early triode radio valve
Wade Bequest collection of valves: experimental radio valve, 1918
1918
Wade Bequest collection of valves: early triode radio valve
Wade Bequest collection of valves: World War One German triode radio valve
1916
Wade Bequest collection of valves: early triode radio valve by Marconi-Osram
Wade Bequest collection of valves: early tetrode radio valve by Marconi-Osram
1916
Wade Bequest collection of valves: pentode radio valve
Wade Bequest collection of valves: UHF radio valve of "Micropup" construction
Wade Bequest collection of valves: unknown radio valve
Wade Bequest collection of valves: Triode radio valve, by Marconi-Osram
Wade Bequest collection of valves: DEVX triode radio valve, by Marconi-Osram
Wade Bequest collection of valves: Early triode radio valve described as 'soft' Silver valve
Wade Bequest: DE6b triode radio valve with green tint
