RCA Radiotron 35 VM RF pentode valve (McVitie Weston valve collection), 1931-1972
1931-1972
Cunningham triode type C300 1921
1921
Cunningham triode type C301
1921
McVitie Weston valve collection, Cunningham valve, type CX 381
1928
Cunningham triode type C301A
1923
McVitie Weston valve collection, Cunningham valve, type CX-326
1928
McVitie Weston valve collection, Cunningham valve, type CX-380
McVitie Weston valve collection, Cunningham valve, type C-299
1924
McVitie Weston valve collection, Cunningham valve, type CX-112-A
1934
McVitie Weston valve collection, Cunningham valve, type CX-299
1924
McVitie Weston valve collection, Cunningham valve, type CX 371
McVitie Weston valve collection
McVitie Weston valve collection, Cunningham valve, type C327
McVitie Weston valve collection, Cunningham valve, type C-327
McVitie Weston valve collection
McVitie Weston valve collection
1934
McVitie Weston valve collection, Cunningham valve, type 82
circa 1930
McVitie Weston valve collection, Cunningham valve, type CX 350
McVitie Weston valve collection, Cunningham valve, type CX-301-A
1934
McVitie Weston valve collection, Cunningham valve, type CX310
1934
Cunningham triode type CX300A
1926