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12J7G Philco Sylvania 1940's like new (100/60)
12J7GT RCA used/strong 1948 (100/60)
12J7GT RCA used/good 1945 era (92/60)
12J5GT Tungsol NOS 1940's (10.6ma Gm=2800)
VT-135=12J5GT Sylvania round plate NOS 1940's (8.6ma)
5693 GE used/like new 1959 (2.9ma)
(!!) (Recommended Pair) 6CS7 Sylvania 1956 and Sylvania branded GM Delco "D" getter NOS 1956 with partially wrinkled top getter (19/10.8ma and 18.5/11.2ma) 1-3% matched
(!) (SINGLE) EF184 RCA Holland NOS 1962 (9ma)
12J5GT Sylvania NOS 1940's (9.6ma Gm=2900)
(!!) EF184 Siemens Halske branded Zenith Germany NOS 1969 (9.4ma)
6EJ7 GE NOS (7.3ma)
5840=EF732 Raytheon NOS 1960's (4.7ma)
12J5GT RCA NOS (6.7ma)
(1 PAIR) 408A Western Electric used/good 1964-1969 (76/60 and 74/60)
(!!!!) (Best Single #2) ECC803S=12AX7 Telefunken Qualitex Ulm Germany <> bottom like new 1964 (1.3/1.5ma and Gm=1600/1800)
(1 PAIR) NE-408A Northern Electric Canada NOS 1972-1974 (83/60 and 85/60)
(!!!!) (BEST PAIR) 408A Western Electric NOS 1976 and 1982 (86/60 and 88/60)
(!!!!) (BEST PAIR) 408A Western Electric NOS "D" getter 1970 (85/60 and 86/60)
(!!!!) (Best Pair) CV4004=12AX7 Mullard box plates NOS 1981 (0.9/1.2ma and 0.9/1.1ma)
(!!!!!) (Best Pair) 12AX7=ECC83 Pope and Philips Holland NOS 1971-1972 (1.1/1.6ma and 1.2/1.7ma) (Same Gm)
