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(!!!) (Recommended Single) 5998A Sylvania JAN NOS 1980 (124/130mA)
(!!!) (Recommended Single) 6336A Tungsol NOS 1960 era (75/80ma) ***
(!!!) (Recommended Single) JTL-6X4W Tungsol NOS 1955 curved "D" getter (49/40 and 52/40)
(!!!) (Recommended Single) JTL-6X4WA Tungsol NOS 1961 curved "D" getter (51/40 and 52/40)
(!!!) (Recommended Single)6SN7GT Tungsol tests like new black coated glass and black round plates 1945 (9.2/9.0ma) (close triode balance)
(!!!) (Set of 74) 6X4 US Brands NOS original boxes 1950-1980 era (set of 74)
(!!!) (Single 1955) JG-12AY7 GE "D" getter like new 1955 (3.3/2.7ma) (High Gm)
(!!!) (Single 1956) 12AY7 GE "D" getter like new 1956 (3.1/2.8ma)
(!!!) (Single) 5998A Sylvania JAN NOS 1980 (121/130mA)
(!!!) (Single) CK-5687 Raytheon black plates "O" getter like new 1960 (30/33.5ma)
(!!!) (Slightly Microphonic Single) 5670=2C51 Tungsol black plates "D" getter NOS 1958 (9.6/10.2ma)
(!!!) (Slightly Microphonic Single) 5670=2C51 Tungsol black plates "O" getter NOS 1960 era (8.4/8.8ma)
(!!!) (slightly microphonic) 5687 Tungsol black plates "U" getter halo branded GE NOS 1950's (36/40ma)
(!!!) 12AY7 GE NOS rebranded Raytheon 1960's (2.8/3.4ma)
(!!!) 231=31 US Made Balloon NOS 1920's (14.2ma)
(!!!) 2A3 RCA black plates D getter halo 1940's NOS in white box (102ma)
(!!!) 31 RCA Radiotron Balloon NOS 1920's (13.2ma)
(!!!) 35W4 RCA NOS 1970 era (52/40)
(!!!) 5881 Tungsol used/good 1957 (58ma)
(!!!) 6336 Chatham metal plates used 1954 (59/74ma)
