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(!!!) (Best Single) 5965A GE "5 Star" NOS 1964 (13.8/15ma)
(!!!) (Best Single) 5993 Bendix Rectifier NOS 1960 (52/40 and 53/40)
(!!!) (Best Single) 5U4GB Hytron NOS "O" getter halo 1960 era (59/40 and 60/40)
(!!!) (Best Single) 5V4GA RCA black plates NOS 1958 slightly tilted glass (62/40 and 62/40)
(!!!) (Best Single) 6087=5Y3WGTB GE 5 Star NOS 1968 (52/40 and 52/40)
(!!!) (Best Single) 6094 Cetron NOS 1972 (Tungsol clone) (61ma) (last series made)
(!!!) (Best Single) 6106 Bendix 1950's NOS rebranded 5Y3WGTA Heintz & Kaufman in 1970's slightly tilted glass (66/40 and 68/40)
(!!!) (Best Single) 6350 RCA black plates NOS "O" getter NOS 1960's (16.0/16.2ma) (Highest Ma and Gm)
(!!!) (Best Single) 6386 GE branded RCA NOS 1968 (10.2/10.8ma) (sold out)
(!!!) (Best Single) 6AN8 RCA branded Raytheon "D" getter gray plates NOS 1960 era (16.5/15.5ma)
(!!!) (Best Single) 6BQ5 Sylvania black plate NOS 1950's (55.5ma)
(!!!) (Best Single) 6BX7GT RCA NOS 1967 (48ma/49ma)
(!!!) (Best Single) 6BX7GT Sylvania "O" getter NOS 1960's (73.6ma/83.3ma)
(!!!) (Best Single) 6BX7GT Sylvania Motorola triple mica "O" getter NOS 1963 (73.6ma/75.6ma) (close triode balance)
(!!!) (BEST SINGLE) 6CA4=EZ81 GE NOS 1970 (55/40 and 55/40) 1% section balance
(!!!) (BEST SINGLE) 6F6G RCA NOS 1950's (45.5ma)
(!!!) (Best Single) 6FQ7 RCA clear top NOS 1966 (7.2/8.2ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!) (Best Single) 6FQ7 RCA clear top NOS 1970 (9.0/9.2ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!) (Best Single) 6KD6 Sylvania double plates NOS 1960's (130ma)
(!!!) (Best Single) 6L6G Raytheon NOS 1940's (68ma)
