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(!!!!) (Best Raytheon Pair) JAN-5755 Raytheon Black Plates NOS 1979 (1.7/1.8ma and 1.9/1.7ma)
(!!!!) (Best Single #2) 5687WA Sylvania NOS 1960's (34/35ma) (Same Gm)
(!!!!) (Best Single #3) JHS-5687WA Sylvania NOS "U" getter 1960 (37.4/36ma)
(!!!!) (Best Single) 12BH7A Sylvania Silvertone gray oval plates large "D" getter halo 1950's NOS (13.6/12.4ma)
(!!!!) (Best Single) ECC32=CV181 Mullard branded Philips Miniwatt brown base/black plates "D" getter halo mid-1950's (6.2/6.4ma) 1-2% section balance
(!!!!) (Best Single) JAN-5687WA Sylvania NOS 1967 (38/39ma) (Highest Ma and Gm)
(!!!!) (Best Single) JAN-5998 Tungsol NOS black plates NOS 1966 same build as 421A Western Electric (87ma/73ma)
(!!!!) (Best Single) JHS-5687WA Sylvania NOS 1966 (46/48ma) (Highest Ma and Gm)
(!!!!) (Best Value Pair) JAN-12AT7WC Sylvania black plates NOS 1980 (8.6/7.6ma and 9.0/7.5ma)
(!!!!) (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
(!!!!) (Good Single 1950) 12AU7 Sylvania black plates "D" getter NOS 1950 (11/12.8ma)
(!!!!) (Good Value Single) 6SN7GTB Westinghouse USA black plates "D" getter halo like new 1960 (6.8/7ma)
(!!!!) (PAIR) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.0/2.2ma and 1.8/2.2ma) (rare)
(!!!!) (Pair) 6AN8A Sylvania NOS 1970's (9/12ma and 10/12ma) (close Gm)
(!!!!) (Single 1950's) 12BH7A RCA branded Westinghouse narrow black plates NOS "U" getter mid-1950's (10.6/7.4ma) (1st series made)
(!!!!) (Single) 12AX7 RCA Motorola black plates "D" getter used/good 1953 (0.8/0.8ma and Gm=1400/1400) 1% section balance
(!!!!) (Single) 12BH7A Sylvania gray oval plates "O" getter NOS 1960 era (10.4/7.6ma)
(!!!!) (Single) 12BH7A Sylvania Silvertone gray oval plates large "O" getter halo 1960 era NOS (11.5/10.6ma)
(!!!!) (Single) 5691 RCA branded GE red base black plates NOS 1960's a few vertical scratches on base (2.1ma/2.3ma)
(!!!!) (Single) 5691 RCA branded GE red base gray plates NOS 1960's (2.1ma/2.4ma)
