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(!!!) (Pair) JTL-6AK5 Tungsol gray plate "D" getter used/good 1952-1954 (5.1ma/5.6ma) (same Gm)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.5ma and 1.5ma)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)
(!!!) (Recommended Pair) 6SN7GTB GE used/good 1957-1961 (8.2/7.8ma and 7.6/7.2ma) 1-5% matched
(!!!) (Set of 74) 6X4 US Brands NOS original boxes 1950-1980 era (set of 74)
(!!) (1 Pair) 408A Western Electric NOS 1971-1974 (70/60 and 71/60)
(!!) (Best Pair #2) 6AR6=6098 Tungsol oval plate NOS 1951 (88ma and 84ma) (1st series made) (Copy)
(!!) (Best Single) 12AX7A Westinghouse pinched gray plates "D" getter NOS 1965 (1/1ma and Gm=1600/1700) 1-2% section balance
(!!) (Best Value Single 1953) 12AU7 Sylvania black plates "D" getter used/strong 1953 no printing (9.6/11.8ma)
(!!) (Single) 5814WA GE NOS 1962-1963 (9/10.2ma)
(!!) (Single) 6SN7GTA Philco Sylvania "chrome top" used/good 1954 (6.4/6.8ma)
(!!) (Single) 6SN7GTB RCA NOS 1958 tilted glass (8.8/9.2ma) (Gm the same)
(!!) (slightly microphonic) JHS-12AT7 Sylvania black plate "D" getter 1953 (11.2ma/11.2ma) 1% section balance
(!!) 6BH6 GE black plate NOS "U" getter halo 1953 (6.5ma)
(!!) 6BL7GT GE "D" getter NOS 1957 (36/37.4ma)
(!!) 6SN7GT RCA used/good 1953 (6.6/7.6ma)
(!!) 6SN7GTA RCA branded CAPEHART used/like new 1955 (8.4/9.8ma)
(!) (#1 231D Best Value Pair) 231D Western Electric NOS 1953 (1.8/1.8ma)
(!) (#1 231D Best Value Pair) 231D Western Electric NOS 1954 (1.6/1.6ma)
(!) (#2 231D Best Value Pair) 231D Western Electric NOS 1953 (1.7/1.7ma)
