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(!!!!!) (Best Single 1953) GL-6072 GE also branded LEAR 5 star triple mica black plates "D" getter halo 1953 like new (3.1/3.0ma) (Same Gm) (V1 guitar amp, mics, Audio Note) 1-2% section balance
(!!!!!) (Best Value Single 1953) 6072 GE 5 star triple mica black plates "D" getter halo 1953 low hours/tests like new (2.6/2.6ma) 1% section balance (V1 guitar amp, mics, Audio Note)
(!!!!!) (Best Value Single 1953) GL-6072 GE 5 star triple mica black plates "D" getter halo 1953 used/tests like new (2.6/2.5ma) 1-3% section balance (V1 guitar amp, mics, Audio Note)
(!!!!!) (Best Value Single 1953) GL-6072 GE 5 star triple mica black plates "D" getter halo 1953 used/tests like new (2.8/3.4ma) (same Gm) (V1 guitar amp, mics, Audio Note)
(!!!!!) (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 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)
(!!!!!) (Bets Value Single) GL-6072 GE 5 star triple mica black plates "D" getter halo used/tests like new 1953-1954 faded printing (2.9/2.4ma) (V1 guitar amp, mics, Audio Note)
(!!!!) (3rd Best Pair 1960) 12AX7 Westinghouse NOS gray pinched plates "D" getter 1960 faded printing (1.0/1.0ma and 1.2/0.9ma) 1-5% matched
(!!!!) (Best Overall Pair) 6SL7GT RCA NOS black plates gray coated glass 1950's (2.3/2.4ma and 2.2/2.4ma)
(!!!!) (BEST PAIR) 408A Western Electric NOS "D" getter 1970 (85/60 and 86/60)
(!!!!) (BEST PAIR) 408A Western Electric NOS 1976 and 1982 (86/60 and 88/60)
(!!!!) (Best Single #2) 6SN7GTB RCA NOS 1961 (9.6/10ma) (same Gm)
(!!!!) (Best Single #3) 6SN7GTB RCA branded Wards Super Airline NOS 1959 (9.0/9.2ma)
(!!!!) (Best Single #4) 6SN7GTB RCA NOS 1964 (9.2/8.0ma)
(!!!!) (Best Single 1960) 12AX7 Westinghouse NOS gray pinched plates "D" getter 1960 era (Gm=1600/1800 and 1.2/1.5ma)
(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (9.3/11ma)
(!!!!) (Best Single) JAN-CEA-5852=6X5GT Bendix NOS 1953 (64/40 and 66/40) (Best Audio Grade 6X5GT)
(!!!!) (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) 6SN7GTB RCA NOS 1964 (8.4/7.2ma)
(!!!!) (Good Single 1950) 12AU7 Sylvania black plates "D" getter NOS 1950 (11/12.8ma)
