836 Raytheon NOS 1940's in white box (53/40)
84=6Z4 Belmont engraved base used/good 1930's (50/40 and 50/40)
84=6Z4 Greylock USA by National Union like new condition 1940's (49/40 and 54/40)
84=6Z4 Philco engraved base used/very good 1940 era (49/40 and 52/40)
84=6Z4 Philco used 1950's (44/40 and 46/40)
84=6Z4 Philco used/fair 1940's (42/40 and 43/40)
84=6Z4 RCA NOS GT-shape glass slightly tilted glass 1967 (44/40 and 47/40)
84=6Z4 RCA NOS GT-shape glass tilted glass 1967 (47/40 and 48/40)
84=6Z4 Wizard by Sylvania used/good 1940's (50/40 and 52/40)
866A GE low hours/like new 1940's
866A=VT-46A RCA NOS 1942 (62/40)
866AX Amperex France brown base 1965 tests like new, a few scratches on base, reboxed
866AX Amperex Holland black base NOS 1960's (54/40)
866Jr Taylor Balloon 1930's (display tube, does not function)
AZ1 Philips by Mullard NOS 1960's (0 in stock)
AZ11 Ultron Germany NOS 1960's - 1970's (1 in stock)
AZ12 Ultron Germany NOS 1950's rattle inside base from dried glue particles (1 tube)
AZ21 Tungsram NOS loktal base black plates 1940's (8 in stock)
AZ31 NOS (8 in stock)
AZ41 Philips France NOS 1961 (1 in stock)