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12A8GT Nat. Union used/good 1940's (89/60)
(!!) 6BL7GT GE "D" getter NOS 1957 (36/37.4ma)
(!!) 12BH7A Westinghouse ribbed plates NOS 1963 (9.0/10.8ma)
(!!) (Good Value) 12AT7=ECC81 Siemens Halske Germany used/strong 1964 (8.2ma/12.2ma)
58 National Union NOS 1950 era (58/36)
58 RCA NOS 1940's (68/36)
(!!) (Best Value Single) 12AT7WA Raytheon NOS black plates - triple mica - O getter halo 1975 era like new (8/12.6ma)
(!!!) (Best Single) JAN-12AT7WA Raytheon NOS black plates - triple mica - O getter halo 1968 (13.8/13.4ma)
58 US Brands used/good (6 in stock)
(!!) 12BH7A RCA used/very good 1960's (9.8/11.6ma)
(!!!) (Single 1962) 6DJ8 Amperex Holland used/good 1962 (11.6/12.6ma)
(!) 6DJ8 Tungsram Hungary branded Amperex used/good 1982 (9.5/12.5ma)
(!!!!) (Best Pair) 12SN7GTA GE coin-base side getter NOS 1980 (10.4/10.8ma and 10.4/10.0ma) (same Gm)
(!!!!) (Best Pair) 12SN7GTA GE coin-base side getter NOS 1980 (8.8/9.4ma and 8.4/9.0ma) (close Gm)
(!!!) (Best Holland Single) ECF80=6BL8 Amperex Bugle Boy Holland NOS 1957 (14ma/11ma)
6136=6AU6WB GE 5 star black plate NOS 1956 (6.6ma)
(!) 6DJ8 Tungsram Hungary branded Amperex NOS 1980 (11.2/11.0ma)
(!) (Best Pair) 6661=6BH6 GE NOS 1983 (9.4ma and 8.3ma)
(!!!!) (Best Single 1960) 12AX7 GE tall gray ribbed plates "U" getter NOS 1960 (Gm=1700/1600 and 1.5/1.1ma)
(!!!!) (Best Pair 1960) 12AX7 GE tall gray ribbed plates "U" getter like new 1960 (1.2/1.2ma and 1.3/1.2ma) 1-3% matched