(!!!!) (Best Value Pair) 6021=CV3986 Mullard UK Whyteleafe plant NOS 1972 original boxes (4.4/7.0ma and 4.8/6.0ma)
(!!!!) (Good Value Single) 396A Western Electric NOS 1974 (5.8/4.8ma)
(!!!!) (Recommended Pair) 12AX7=ECC83 Mullard England ribbed plates NOS 1966-1970 (163 Series) (1.1/1.0ma and 0.9/1.0ma)
(!!!!) (Recommended Pair) ECC82=12AU7 Telefunken Germany <> Bottom smooth plates NOS 1960's - 1970 faded printing (8.2ma/8.6ma and 8.8/9.2ma)
(!!!!) (Recommended Pair) ECC83=12AX7 Tungsram Hungary branded IEC Mullard NOS 1982 (1.5/1.6ma and 1.4/1.7ma)
(!!!!) (Recommended Single) 396A Western Electric NOS 1984 (8/6ma)
(!!!!) (Recommended Single) EF86 Telefunken Germany <> bottom NOS gray shield 1972 (3.0ma) (Neumann, Lawson, Soundelux, Manley)
(!!!!) (Slightly microphonic single) 12AX7=ECC83 Mullard UK branded Philips ribbed plates NOS 1962 (161 Series) (1.0/1.2ma and Gm=1600/1650)
(!!!) (Best Pair) 6C4WA GE JAN NOS 1971-1973 (9.2/9.4ma) 1-3% matched (Conrad Johnson)
(!!!) (Best Raytheon Pair) JAN-6021W Raytheon NOS 1972 some extra getter stains on glass (5.0/6.0ma and 4.6/5.4ma)
(!!!) (Best Value Pair) 6C4WA GE JAN NOS 1966-1967 (7.8/7.8ma) 1-2% matched
(!!!) (Best Value Single) 12AX7=ECC83 Mullard UK ribbed plates used/good 1967 (1.7/0.8ma and Gm=2000/1600) (V1 guitar amp)
(!!!) (Best Value SIngle) EF86 Valvo Germany branded Philips NOS 1970 (4.4ma) (highest Ma and Gm)
(!!!) (Good Value Pair) 6384 Tungsol NOS 1966-1967 (56ma and 57ma)
(!!!) (Good Value) 6021=CV3986 Mullard UK Mitcham plant NOS 1971 (4.2/4.4ma and 4.2/4.4ma)
(!!!) (Recommended Mullard Pair) 6BM8=ECL82 Philips Mullard NOS 1973-1974 (2.3ma/2.3ma and 25/28ma)
(!!!) (Recommended Pair) 6005W Sylvania JAN black plate clear glass NOS 1971 (45.8ma and 46.6ma)
(!!!) (Recommended Pair) 6005W Sylvania JAN black plate clear glass NOS 1971-1972 (41ma and 41.2ma) 1% matched
(!!!) (Recommended Pair) 6AQ5A Sylvania black plate NOS 1970's (48.5ma and 49.5ma)
(!!!) (Recommended Pair) 6AQ5A Sylvania black plate NOS 1970's (50.5ma and 52ma)