(!!) 412A Western Electric NOS 1969 (51/40 and 52/40)
(!!) 412A Western Electric NOS 1970 (53/40 and 53/40)
(!!) 5Z3G National Union burgundy base NOS "D" getter 1951 (56/40 and 59/40)
(!!) 5Z3G National Union NOS "D" getter 1940's (52/40 and 54/40)
(!!) 5Z3G Sylvania Italy NOS 1960's (54/40 and 55/40)
(!!) 5Z3G Westinghouse NOS 1957 (59/40 and 61/40)
(!!) AZ1 Miniwatt Dario France NOS 1954-1955 (1 in stock)
(!!) EZ35=6X5GT Mullard UK used/tests like new 1950-1955 small crack in base (52/40 and 57/40)
(!!) JAN-5Z3G RCA NOS tilted glass (56/40 and 56/40)
(!) (Best Single) 5Z3G Hytron NOS 1947 (51/40 and 51/40)
(!) (Best Single) 6ZY5G GE NOS 1951 (55/40 and 56/40)
(!) (Best Single) 6ZY5G Raytheon NOS 1940's (53/40 and 54/40)
(!) (Best Value) 5Z3G RCA Victor NOS 1940's (48/40 and 49/40)
(!) (Good Value Single) GZ34=5AR4 Dynaco Mullard brown base used/good 1968 (57/40 and 57/40)
(!) (Good Value Single) GZ34=5AR4 Mullard branded Siemens used/good 1972 vertical scrapes on base (56/40 and 56/40)
(!) (Good Value Single) GZ34=5AR4 Philips Mullard used/good 1975 (56/40 and 56/40)
(!) (READ REVIEW) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40 x 2 tubes)
(!) (Recommended Single) 5Z3G FAA RCA NOS 1962 (56/40 and 56/40)
(!) (SINGLE) 866A GE NOS 1971 (2 in stock)
(!) (SINGLE) 866A GE NOS 1971 (54/40)
