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(!!!!) (GE Pair) 6BQ7A GE NOS "O" getter halo 1973-1980 (10.5/9.7ma and 11.4/9.4ma) (Schiit, DNA, Modwright)
(!!!!) (GE Pair) 6BQ7A GE NOS "O" getter halo 1976 (7/10ma and 7/9ma) (Schiit, DNA, Modwright)
(!!!) (Best Pair #1) 6BL7GTA GE black plates NOS 1959-1960 (50/49ma and 49/52.5ma)
(!!!) (BEST PAIR) 6BX7GT Sylvania "D" getter halo NOS 1950's (57.6/62.6ma and 64.0/58.0ma) (close triode balance)
(!!!) (Best Single) 6BX7GT RCA NOS 1967 (48ma/49ma)
(!!!) (Recommended Pair) 6BL7GTA GE and GE branded Admiral 1960's (38/40ma and 35/45ma)
(!!!) (Recommended Single) 6BX7GT GE "O" getter gray plates 1963 (71/76ma)
(!!!) (Recommended Single) 6BX7GT GE branded Westinghouse "O" getter gray plates 1960's (43/48ma)
(!!!) (Recommended Single) 6BX7GT GE branded Westinghouse black plates NOS "O" getter 1962 (71/79ma)
(!!!) (Single 1956) 6BX7GT GE triple mica "D" getter halo NOS 1956 (41/40ma)
(!!) (#1 7551 Pair) 7551 RCA black plate branded Motorola NOS 1970's (45.2ma and 46ma)
(!!) (#1 7551 Pair) 7551 RCA black plate branded Motorola NOS 1970's (48ma and 48.2ma)
(!!) (#3 7551 Pair) 7551 RCA black plate branded Motorola NOS 1970's (44ma and 45ma)
(!!) (BEST SINGLE) 6BL7GTA Tungsol NOS 1960 era (43/44ma)
(!!) (BEST SINGLE) 6BX7GT Sylvania triple mica NOS 1950's (55/57ma) (1-3% section balance)
(!!) (Recommeded Pair) 6BX7GT GE branded NOS "D" getter 1958 - 1 tube branded RCA (72ma/95ma and 92/87ma) (highest mA and Gm)
(!!) (SINGLE) 6BL7GT Sylvania branded Tungsol triple mica NOS 1956-1957 (36.2/31.5ma)
(BEST PRICE) 1R5 US Brands NOS (4 for $12.99)
12SN7GT CBS NOS 1950's (9.0/9.6ma)
12SN7GT Raytheon used/good 1949 (6.2/6.2ma)
