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(!!!!) (Best Value Single) 6550 Tungsol branded Sylvania smooth gray plate used/tests like new 1960 era (138ma)
(!!!!) (Good Value Single) 6L6GC Seeburg by RCA black plate used/good 1961 (66ma)
(!!!!) (Pair) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (82ma and 83ma)
(!!!!) (Pair) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (86ma and 92ma)
(!!!!) (Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.7ma and 2.6ma) 1-2% matched
(!!!!) (Recommended Pair) 12AU7A Amperex and Philips by Mullard UK NOS ribbed plates 1974 (10.6/11.6ma and 10.4/11.2ma) (DAC, linestage)
(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1958-1967 (79ma and 85ma) (one of the best sounding 6B4G ever made)
(!!!!) (Single) 12BH7A GE gray oval plates 1962 (6.6/9.6ma)
(!!!!) (Single) 12BH7A Sylvania Silvertone gray oval plates large "O" getter halo 1960 era NOS (11.5/10.6ma)
(!!!!) (Single) 8D8=EF86 Brimar UK quad mica NOS 1961 era (2.9ma) (rare low noise EF86 by Brimar)
(!!!) (Best GE Single) 6EU7 GE NOS pinched gray plates 1975 (56/32 and 58/32)
(!!!) (Best Pair #2) 6094 Bendix NOS and like new 1956-1957 (49.5ma and 53.5ma) (1st series)
(!!!) (Best Pair #2) E182CC=7119 Amperex and Philips Miniwatt SQ Holland NOS "O" getter halo 1962-1967 (38ma/36ma and 36/35ma)
(!!!) (Best Pair #3) E182CC=7119 Amperex and Philips Miniwatt SQ Holland NOS "O" getter halo 1962-1966 (36ma/43ma and 43/37ma)
(!!!) (Best Pair 1961) ECC82=12AU7 Miniwatt Holland NOS and like new 1961-1963 (9.8/9.2ma and 9.4/9.8ma)
(!!!) (Best Pair) 6203 GE NOS 1976-1979 (53-54/40 and 54-54/40)
(!!!) (Best Single #1) 5881 Tungsol NOS 1954 (79.5ma)
(!!!) (Best Single #1) JAN-CG-6V6GT GE coated glass NOS 1954 (58.5ma)
(!!!) (Best Single 1967) ECC82=12AU7 Philips Holland NOS 1967 (11.2/10.6ma) (same Gm)
(!!!) (Best Single) 6094 Cetron NOS 1972 (Tungsol clone) (61ma) (last series made)
