(!!!!!) (Best 5-Star Pair) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new (3.1/2.7ma and 3.2/2.7ma) 1-2% matched (Audio Note, Kondo, mics)
(!!!!!) (Best Value Pair) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new (2.9/3.1ma and 3.1/2.9ma) 1-2% matched (Audio Note, Kondo, mics)
(!!!!!) (Best Value Single) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new faded printing (2.9/3.2ma) (mic, preamp, amp)
(!!!!!) (Recommended Pair) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new (3.0/2.7ma and 3.0/2.8ma) 1-2% matched (Audio Note, Kondo, Korby, Lawson)
(!!!!!) (Recommended Single) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new (2.7/3.0ma) (V1 guitar amp, mics, Audio Note)
(!!!!!) (Single) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new faded printing (2.6/3.1ma) (mic grade)
(!!!!) (Best Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new (2.7/2.7ma and 2.6/2.7ma) 1-2% matched (Same Gm)
(!!!!) (Best Value Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 like new (2.4/2.4ma and 2.4/2.4ma) 1% matched
(!!!!) (Best Value Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/good (2.0/2.1ma)
(!!!!) (Best Value Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/good (2.1/2.0ma)
(!!!!) (Good Value Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/good (2.1/2.1ma and 2.0/2.2ma) 1-2% matched
(!!!!) (Good Value Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new faded printing (2.4/2.2ma and 2.2/2.4ma) 1-2% matched
(!!!!) (Good Value Pair) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 used/test like new faded printing (2.7/2.7ma and 2.7/2.6ma) 1-2% matched
(!!!) (BEST PAIR) JAN-CRC-5693 RCA NOS 1961 original boxes (2.9ma/3.0ma) (same Gm) (premium low noise 6SJ7) (Peluso, Gibson)
(!!!) (BEST VALUE) 6072A GE black plates double mica NOS 1980 (2.4/2.7ma)
(!!) (Best Single) JAN-5693 GE JAN Black Can NOS 1978 (3.0ma)
(!!) (Best Single) JAN-CRC-5693 RCA red can NOS 1961 (3.4ma) (Peluso, Gibson)
(!!) (Slightly Microphoinic Single) 6072A RCA black plates NOS 1971 (2.6/3.0ma)
(!!) 5693 RCA red can NOS 1949 (2.9ma)
5693 RCA branded Raytheon used good 1960 (2.2ma)