5BC3A RCA NOS (0 in stock)
5M-K9 NEC Japan NOS (58/40) (sold out)
5M-K9 Toshiba Japan NOS (0 in stock)
5U4GB Tungsol used/good 1960 (51/40 and 60/40)
5X4G Cunningham NOS 1946 (51/40 and 52/40)
5X4G Cunningham NOS 1946 (54/40 and 55/40)
5X4G RCA NOS 1960 (54/40 and 55/40)
5Z3G Ken Rad small "D" getter NOS 1945 era (51/40 and 51/40)
5Z3G Ken Rad wide "D" getter NOS 1945 era (52/40 and 54/40)
5Z3G RCA used/good 1956 (46/40 and 48/40)
5Z3G TRIAD by RCA used/tests like new 1940's (52/40 and 52/40)
5Z3G Tungsol NOS 1940's (51/40 and 53/40)
5Z3P Chinese (substitute is 5U4G or 5U4GB)
5Z4P Chinese (Best sub is 5Z4G or GZ30)
6BE3=6BZ3 NOS (16 in stock)
6BL4 RCA NOS 1950's
6BS3A NOS (7 in stock)
6BW4 Sylvania black plates used/good 1954-1955
6CM3 GE NOS 1960's (1 pair)
6Z5 Majestic NOS