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(!!!!) (Best Single #1) ECC802S=12AU7 Telefunken Germany <> bottom NOS 1960 good printing (11.0ma and 10.6ma) (Same Gm)
6A8G Cunningham NOS 1948 (52/29)
(!) 6BE6 Sylvania NOS (1.4ma)
(!!) 7247=12DW7 GE branded Tungsol tall gray ribbed plates used/good 1960 era (1.0ma and 7.8ma)
(!!) (Single) ECF82=6U8 Toshiba Japan branded Telefunken NOS 1964 (14.2ma triode and 9ma pentode)
(!!) (Single) ECF82=6U8 Toshiba Japan branded Telefunken NOS 1964 (17ma triode and 8.2ma pentode)
(!!) 7247=12DW7 GE branded RCA tall gray ribbed plates low hours/tests like new 1961 (1.3ma and 9.2ma)
(!!!!) (Best Overall Single) 5670W GE JAN NOS 1986 (8.2/8.2ma) (Same Gm) 1% section balance
(!!) (slightly microphonic) 12AX7 Sylvania Zenith black ribbed plates "D" getter NOS/80% 1953 (Gm=1300/1400 and 0.9/1.0ma)
(!!!!) (Best Value Single 1953) GL-6072 GE also branded LEAR 5 star triple mica black plates "D" getter halo 1953 used/tests like new (2.6/2.5ma) (Same Gm) (V1 guitar amp, mics, Audio Note) 1-2% section balance
(!!!!!) (Best Value Single 1953) GL-6072 GE 5 star triple mica black plates "D" getter halo 1953 used/tests like new (3.0/3.6ma) (same Gm) (V1 guitar amp, mics, Audio Note)
(!!!!!) (Best Single #1 1953) GL-6072 GE also branded LEAR 5 star triple mica black plates "D" getter halo 1953 like new (3.5/3.5ma) (Same Gm) (V1 guitar amp, mics, Audio Note) 1% section balance
(!!!!!) (Best Value Single 1953) GL-6072 GE 5 star triple mica black plates "D" getter halo 1953 used/tests like new (3.2/2.4ma) (V1 guitar amp, mics, Audio Note)
(!!!!!) (Best Single #2 1953) GL-6072 GE also branded LEAR 5 star triple mica black plates "D" getter halo 1953 like new (2.7/2.9ma) (V1 guitar amp, mics, Audio Note) 1-3% section balance
