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(!!!) (BEST VALUE PAIR #1) 6SN7GTB RCA coin-base 1970-1975 (10.4/9.6ma and 9.4/10.6ma)
(READ REVIEW) 6SN7GT Tungsol tests like new black coated glass and black round plates 1945 (9.2/9.0ma) (close triode balance)
(!!!!) (Best Single 1970's) 6SN7GTB Sylvania branded GE coin-base NOS 1970's (9.2/9.2ma) 1-2% section balance
(READ REVIEW) 6SN7GTB GE NOS 1966-1968 (7.4/6.2ma and 7.6/6.8ma) (same Gm)
(!!!!) (Good Value Single) 6SN7GTB Westinghouse USA black plates "D" getter halo like new 1960 (6.8/7ma)
6SN7GTA CBS NOS Black Ribbed Plates similar to RCA early 1950's (8.3/8.6ma)
6SN7GTB CBS black base black plates side-getter, the same shape as Sylvania 6SN7GTB used/good 1961 (7.5/8.0ma)
6SN7GTB RCA used good 1960's (6.4/8.2ma)
6SN7WGT Raytheon brown base black ribbed plates "D" getter halo 1959 used/good (6.2/8.4ma)
(!!!!) (Best Value Pair #2) 6SN7GTB RCA coin-base NOS 1970-1975 (8.8/9ma and 9.3/8.3ma)
(!!) (SINGLE) 6SN7GTA Sylvania branded Standard "chrome top" NOS 1953 (8ma/7.2ma) (Same Gm)
(!!!!) (Best Value Pair) 6SN7GTB GE NOS 1960-1962 (7.0/6.8ma and 7.2/6.8ma) (smooth) (Schiit Freya, Rogue)
(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1954 (6.0/6.4ma)
(!!!) (Good Value Single) 6SN7GT Tungsol parallel gray plates NOS 1952 double large "O" mica (8.6/7.0ma) (rare)
(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1952 (9.4/11.4ma)
(!!!!) (Best Value Pair) 6SN7GTB RCA coin-base NOS and like new 1970-1975 (9.8/7.0ma and 8.8/7.0ma)
(!!) (Single) 6SN7GTB GE branded Raytheon NOS 1970's (10/9.6ma)
(!!!!) (Good Value Pair) 6SN7GTB GE used/good 1958-1961 (6.4/6.8ma and 6.4/6.6ma)
(!!!!) (Good Value Pair) 6SN7GTB GE used/good 1956-1957 (7.6/6.8ma and 6.6/7.3ma) (same Gm)
(!!!!!) (BEST VALUE PAIR #3) 6SN7GTB GE coin-base NOS 1979 same date codes (8.4/8.2ma and 7.4/7.4ma) (Schiit Freya, Rogue)
