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(!!!!!) (Best Pair #1) 12BH7 Mullard Australia by AWA gray ribbed plates NOS 1960's (9.6/10.2ma and 9.2/10.1ma) 1-3% matched (close Gm) (similar sound to RCA) (rare)
(!!!!!) (Best Pair #2) 12BH7 Mullard Australia by AWA gray ribbed plates NOS 1960's (11.8/10.7ma and 13.5/10.2ma) 1-5% matched (close Gm) (similar sound to RCA) (rare)
(!!!!!) (Recommended Pair) 12BH7A GE ribbed plates NOS 1970's (9.6/10.4ma and 8.2/9.6ma) (sweet sound)
(!!!!!) (Single) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (9.8/14.2ma) (similar sound to RCA) (McIntosh, VTL, Manley, Quicksilver)
(!!!!) (Best Single #1) 12BH7A RCA NOS 1964 (13.2/12.4ma)
(!!!!) (Best Single #2) 12BH7A RCA NOS 1963 (10.6/11.6ma)
(!!!!) (Best Single 1953) 12BH7 Sylvania Motorola black oval plates "D" getter like new 1953 (14.6/13.8ma) (High mA and Gm)
(!!!!) (Best Value Single) 12BH7A RCA EI Yugo smooth plates NOS 1970's (11.5/13.2ma)
(!!!!) (Best Value Single) 12BH7A Sylvania gray oval plates "O" getter NOS 1960 era (11.8/12.2ma)
(!!!!) (Recommended Pair) 12BH7A GE branded Zenith and Daystrom gray oval plates "O" getter NOS 1960's (11.0/11.3ma and 10.3/10.5ma)
(!!!!) (Single 1950's) 12BH7A RCA branded Westinghouse narrow black plates NOS "U" getter mid-1950's (10.6/7.4ma) (1st series made)
(!!!!) (Single) 12BH7 Sylvania Philco black oval plates "D" getter used/good 1953 (9.8/9.5ma) (Same Gm)
(!!!!) (Single) 12BH7 Tungsol branded Shield gray oval plates "U" getter halo NOS 1961 (11.8/16.5ma) (Highest mA and Gm)
(!!!!) (Single) 12BH7A GE gray oval plates 1962 (6.6/9.6ma)
(!!!!) (Single) 12BH7A GE gray oval plates NOS mid-1960's (11.5/16ma)
(!!!!) (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) 12BH7A Westinghouse black plates "D" getter NOS 1961 (6.2/7.0ma)
(!!!!) 12BH7A Westinghouse gray ribbed plates used/good "U" getter 1960 era (8.4/11ma)
(!!!) (Best Single 1957) 12BH7A GE NOS gray oval plates large "U" getter halo 1957 (12.5/11.0ma)
