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(!!!!) (Best Single 1958) 6922 Amperex Holland curved "D" getter 1958 NOS (16.2/17.8ma) (same sonics as pinched waist version)
(!!!!) (Best Single 1959) 12AX7 Amperex Bugle Boy Holland large O" getter halo used/good 1959 (Gm=1500/1400 and 1.0/0.7ma) (161 series)
(!!!!) (Best Single 1960) 12AX7 GE tall gray ribbed plates "U" getter NOS 1960 (Gm=1700/1600 and 1.5/1.1ma)
(!!!!) (Best Single 1961) 12AX7=ECC83 Philips Miniwatt Holland 1961 large "O" getter halo NOS (1.8/1.3ma and Gm=2100/1700)
(!!!!) (Best Single 1963) PCC88=7DJ8 Philips Miniwatt Holland "O" getter NOS 1963 (14.2/12.0ma)
(!!!!) (Best Single 1965) CV491=12AU7=ECC82 Mullard UK NOS ribbed plates 1965 (12.5/11.8ma) (High Gm)
(!!!!) (Best Single 1966) 12AX7=ECC83 Philips Holland NOS 1966 (2.1/1.9ma and Gm=2100/2100) (Highest mA and Gm)
(!!!!) (Best Single 1969) 6DJ8 IEC Mullard used/tests like new 1969 (18.2/18.0ma) 1-2% section balance (sweet midrange)
(!!!!) (Best Single 1973) 6201=12AT7WA GE branded Raytheon black plates triple mica O getter 1973 (8.5/8.2ma)
(!!!!) (BEST SINGLE 1985) 12AU7A GE NOS 1985 copper grid posts (9.2/9.4ma) 1-2% section balance
(!!!!) (Best Single) 12AX7=ECC83 Philips Holland NOS 1969 (1.0/1.1ma and Gm=1600/1600) 1-2% section balance
(!!!!) (BEST SINGLE) 201-A Silvertone Balloon NOS 1930 era (3.8ma and Gm=750)
(!!!!) (Best Single) 5692 RCA RED BASE black plates like new 1950 (10.0/9.2ma)
(!!!!) (Best Single) 5842=417A Amperex "PQ" Holland "D" getter Gold Pins NOS 1956-1959 (35ma)
(!!!!) (Best Single) 5965A GE NOS 1976 (16.8/17.0ma) 1-2% section balance
(!!!!) (BEST SINGLE) 6BL7GTA GE "D" getter NOS 1958 (38.0/37.6ma) 1-2% section balance
(!!!!) (Best Single) 6BM8=ECL82 Philips Import by Mullard UK NOS 1969 (2.1ma/46ma)
(!!!!) (Best Single) 6DJ8=ECC88 Sylvania JAN NOS 1974 (17.0/17.5ma) 1-3% section balance
(!!!!) (Best Single) 6SL7GT Sylvania NOS branded Zenith 1950's tall bottle (2.9/2.9ma) 1-2% section balance
(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (8.8/7.8ma)
