(!!!!!) (BEST OVERALL SINGLE) CV378=GZ37 Mullard "D" getter NOS 1955 faded printing (56/40 and 56/40) (1st version made with skinny bottle)
(!!!!!) (Best Pair 1963) 12AX7=ECC83 Mullard UK made for Knight like new ribbed plates 1963 (161 series) (1.0/1.0ma and 0.9/1.0ma) (1-3% matched)
(!!!!!) (Best Pair 1974) 12AU7 Mullard UK NOS 1974 (10.5/10.7ma and 10.4/11.5ma) (Rogue, Hovland, Audio Note)
(!!!!!) (Best Pair) 6V6GT Mullard UK NOS 1960 era (40.0ma and 40.6ma) (same Gm)
(!!!!!) (Best Single 1958) 12AX7=ECC83 Mullard UK "long plates" NOS 1958 (1.3/1.4ma)
(!!!!!) (Best Single 1963) CV492=12AX7 Mullard UK NOS 1963 (161 series) (1.3/1.3ma) 1% section balance
(!!!!!) (Best Single 1965) 12AX7 Mullard Bell & Howell UK NOS 1965 (1.3/1.2ma and Gm=1700/1600)
(!!!!!) (Best Telefunken Pair) EL84 Telefunken Germany <> bottom NOS 1967 (53.0ma and 53.5ma)
(!!!!!) (Best Value Pair) 6021 GE 5 Star Rated NOS "D" getter halo 1957 in GE 5 Star Boxes (1-3% matched) (5.0/7.2ma and 4.8/6.6ma)
(!!!!!) (Best Value Single) 12AX7=ECC83 Mullard UK like new 1973 (1.8/1.1mA and Gm=2000/1600)
(!!!!!) (Best Value Single) CV378=GZ37 Mullard "D" getter NOS 1955 one plate is discolored (57/40 and 57/40) (1st version made with skinny bottle)
(!!!!!) (Good Value Pair - for Audio Aero) 6021=CV3986 Mullard UK Mitcham NOS 1969 (4.4/4.6ma and 4.5/4.8ma) (1-3% matched)
(!!!!!) (Recommended Mullard Pair) 6BQ5=EL84 Mullard UK branded RTC England NOS 1971-1978 (45.5ma and 48.0ma)
(!!!!!) (Recommended Pair - for Audio Aero) 6021=CV3986 Mullard UK Mitcham NOS 1969 (4.8/5.3ma and 4.8/5.0ma) (1-3% matched)
(!!!!!) (Recommended Pair) 12AX7=ECC83 Mullard UK ribbed plates NOS 1970-1974 (1.2/1.3ma and 1.2/1.1ma) (same Gm)
(!!!!!) (Recommended Pair) 6V6GT Mullard UK gray plate NOS 1960 era (41.5ma and 41.8ma)
(!!!!!) (Recommended Pair) 6V6GT Mullard UK gray plate NOS 1960 era (41.5ma and 42.8ma)
(!!!!!) (Recommended Pair) 6V6GT Mullard UK gray plate NOS 1960 era (44ma and 45ma)
(!!!!!) (Recommended Pair) EL84 Telefunken Germany <> bottom test like new 1960's (53ma and 57.4ma)
(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)