33 Sylvania NOS small part of getter material flaked off glass (58/36) strong output
33 United USA NOS 1940's (52/36)
34 Tungsol NOS
34 used/good (0 in stock)
374A Western Electric black plate used/good 1960's (18-21ma) (10 in stock)
374A Western Electric black plate used/good 1960's (18-21ma) (3 in stock)
374A Western Electric black plate used/good/65-70% 1960's (13-17ma) (15 in stock)
374A Western Electric gray plate used/good 1960's (17.2ma)
46 RCA NOS 1940's (60.4ma Gm=3210)
46 Sylvania NOS 1940's (52ma Gm=2950)
46=VT-63 Tungsol NOS 1940's (62ma Gm=3350)
6197=6CL6 GE black plate NOS 1963 in white box (32ma)
6197=6CL6 RCA branded CBS black plate NOS 1960 era in white box (28.2ma)
6197=6CL6 RCA gray plate NOS 1971 (30ma)
6197=6CL6 Sylvania black plate NOS 1960 era (29.6ma)
6227=E80L Westinghouse Holland NOS Gold Pins 1960's (3 in stock)
6397 NOS (34 in stock)
6AG7 GE NOS (7 in stock)
6AG7 GE NOS (8 in stock)
6AG7 RCA NOS 1951 (38.5ma)