McVitie Weston valve collection, Ediswan valve, type B.S.215
1927
McVitie Weston valve collection, RCA Radiotron valve, type 6L6
1937
McVitie Weston valve collection, Osram Catkin valve, type VMS4
1933
McVitie Weston valve collection, Osram Catkin valve, type VMS4
1933
McVitie Weston valve collection, Osram Catkin valve, type VMS4
circa 1930
McVitie Weston valve collection, Osram valve, type V.S.2.
1932
McVitie Weston valve collection, Marconi-Osram valve, type FE3
1924
McVitie Weston valve collection, Osram valve, type M.S.4
1929
McVitie Weston valve collection, Siemens-Halske valve, type 110
circa 1926
McVitie Weston valve collection, Philips Miniwatt valve, type A241
circa 1930
McVitie Weston valve collection
1946
McVitie Weston valve collection
1935
McVitie Weston valve collection
1933
McVitie Weston valve collection, Osram valve, type MX40
circa 1935
McVitie Weston valve collection, MOV Hot cathode neon lamp valve
1932
McVitie Weston valve collection
1939
McVitie Weston valve collection
1939
McVitie Weston valve collection
1928
McVitie Weston valve collection
1940
McVitie Weston valve collection
1933
McVitie Weston valve collection
1931
McVitie Weston valve collection
circa 1933
McVitie Weston valve collection
1937
McVitie Weston valve collection
1940
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 6F6
1946
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 38
1934
McVitie Weston valve collection, Loewe valve, type 3N.F.L.
1937
McVitie Weston valve collection, Loewe valve, type 3NF
1927
McVitie Weston valve collection, Mullard valve, type SD4
circa 1933
McVitie Weston valve collection, Ferranti valve, type HD4
1935
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 57
1934
McVitie Weston valve collection, Ferranti valve, type V.H.T.4
1935
McVitie Weston valve collection, Mazda valve, type SP.2220
1939
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 6A7
circa 1934
McVitie Weston valve collection, Osram valve, type MX40
circa 1935
McVitie Weston valve collection, Osram valve, type MHD4
circa 1933
McVitie Weston valve collection
1934
McVitie Weston valve collection, Marconi valve, type D.E.R.
1924
McVitie Weston valve collection, Osram valve, type D.E.R.
circa 1924
McVitie Weston valve collection, Osram valve, type X30
circa 1935
McVitie Weston valve collection, Osram valve, type X30
circa 1935
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 6C6
circa 1934
McVitie Weston valve collection, Ediswan valve, type D.L.S.1
1935
McVitie Weston valve collection, Cossor valve, type MSG/LA
circa 1932
McVitie Weston valve collection, Philco valve, type 42E
1934
McVitie Weston valve collection, Mazda valve, type PEN220A
1931
McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 78
1934
McVitie Weston valve collection, STC valve, type 8A1 - Experimental
1933
McVitie Weston valve collection, STC valve, type 8A1 - Experimental
1933
McVitie Weston valve collection, Osram valve, type DA41
1940