(!!!!!) (Best Holland Pair 1967-1968) 12AX7=ECC83 Philips and Philips Miniwatt Holland ribbed plates "O" getter halo NOS 1967-1968 (1.3/1.5ma and 1.4/1.6ma) (close Gm)
(!!!!!) (Best Pair 1960-1961) 12AX7=ECC83 Philips Miniwatt Holland large getter halo "O" low hours/like new 1960-1961 (1.2/1.3ma and 1.2/1.1ma) 1-3% matched
(!!!!!) (Best Single 1967) 6DJ8=ECC88 Philips Miniwatt Holland "o" getter 1967 (16/18.8ma)
(!!!!!) (Best Single) 6DJ8=ECC88 Philips Miniwatt Holland "O" getter 1965 (21/23ma) (Highest mA and Gm)
(!!!!!) (Holland Single) 12AU7 Pope Holland NOS 1971 dimpled disc halo (12/13.4ma)
(!!!!!) (Recommended Pair 1960-1965) 12BH7A Sylvania gray oval plates NOS "O" getter (11.5/10ma and 10.5/10ma) (Art Audio, Quicksilver, Octave)
(!!!!) (Best Overall Pair) ECC82=12AU7 Telefunken Germany <> Bottom smooth plates NOS 1961-1965 very good printing (9.8/10.9ma and 9.8/10.4ma) 1-5% matched
(!!!!) (Best Overall Single) 12BH7A Westinghouse gray ribbed plates NOS 1967 (10.6/10.8ma) (Same Gm) (similar to RCA)
(!!!!) (Best Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/2.2ma and 2.0/2.1ma)
(!!!!) (BEST PAIR 1967) 12AU7=ECC82 Philips Holland NOS 1967 (10.8/11ma and 10.6/10.6ma) 1-2% matched
(!!!!) (Best Pair) JTL-5814A Tungsol ribbed plates 1959-1960 (10.6/10.0ma and 10.0/10.4ma)
(!!!!) (Best Raytheon Pair) 6B4G Raytheon NOS 1940's separate plates (92ma and 93ma)
(!!!!) (Best RCA Single) 5687 RCA bronze plates NOS 1972 (35/36ma)
(!!!!) (Best Single) ECC82=12AU7 Telefunken Diamond Bottom ribbed plates like new 1960 (10.6/10.2ma) (same Gm)
(!!!!) (Best Value Pair 1965 era) 12AX7=ECC83 Philips Miniwatt Holland like new 1964-1965 era (1.3/1.2ma and 1.1/1.2ma)
(!!!!) (Best Value Pair) 12AX7=ECC83 Philips Miniwatt Holland tests like new 1963-1965 era (1.1/1.1ma and 1.1/1.1ma) 1-3% matched
(!!!!) (Best Value Pair) 5881 Tungsol used/75% 1957 (54ma and 59ma) (Gm 75%)
(!!!!) (Best Value Pair) 6B4G Raytheon NOS 1940's separate plates, 1 branded Philco (90ma and 91.5ma)
(!!!!) (Best Value Pair) 6SN7GTB GE NOS 1970 era (7.1/6.8ma and 7.2/7.2ma) (Schiit Freya)
(!!!!) (Best Value Single) 6550 Tungsol branded Sylvania smooth gray plate used/tests like new 1960 era (138ma)