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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)
(!!!!!) (Single) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (9.8/14.2ma) (similar sound to RCA) (McIntosh, VTL, Manley, Quicksilver)
(!!!!) (Best Overall) JAN-5998 Tungsol NOS black plates NOS 1966 same build as 421A Western Electric (113ma/119ma) (close triode section balance)
(!!!!) (Best Pair #1) 5881 Tungsol NOS 1954 original boxes (72 and 73ma) (rare)
(!!!!) (Best Pair #2) 5881 Tungsol NOS 1954 original boxes (68ma and 69.5ma)
(!!!!) (Best Single 1953) 12BH7 Sylvania Motorola black oval plates "D" getter like new 1953 (14.6/13.8ma) (High mA and Gm)
(!!!!) (Best Value Pair) 6SN7GTA GE "U" getter halo - side getter - copper grid posts NOS 1953-1954 (6.6/6.0ma and 6.0/6.8ma)
(!!!!) (Best Value Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1953 (6.4/7.0ma and 7.0/6.4ma) 1-2% matched
(!!!!) (Best Value Single) 12BH7A Sylvania gray oval plates "O" getter NOS 1960 era (11.8/12.2ma)
(!!!!) (Good Value Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1953 (6.0/7.2ma and 6.0/7.2ma) 1-2% matched
(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1952 (9.4/11.4ma)
(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1954 (6.0/6.4ma)
(!!!!) (microphonic single) 5687 Tungsol ribbed black plates "U" getter NOS 1952 (42/41.5ma) (1st series made)
(!!!!) (microphonic singles) JAN-5687WB Tungsol branded Raytheon black plates "U" getter NOS 1950's (5 in stock)
(!!!!) (Recommended Pair) 6SN7GTA GE "U" getter halo - side getter - copper grid posts NOS 1951-1953 (7.0/7.8ma and 7.8/7.2ma) (close Gm)
(!!!!) (Recommended Pair) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952-1953 (6.6/7.8ma and 6.6/8.2ma) (close Gm) 1-3% matched
(!!!!) (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) 12BH7A GE gray oval plates 1962 (6.6/9.6ma)
