(!!!!!) (Best Holland Pair) 12AX7=ECC83 Philips Miniwatt Holland like new "O" getter halo 1961 (1.4/1.6ma and 1.4/1.5ma) (Highest mA and Gm) 1-2% matched
(!!!!!) (Best Pair 1959) 6DJ8=ECC88 Philips Miniwatt Holland large "O" getter halo NOS 1959 etched section on each tube (18.6/15.4ma and 16.4/15.8ma)
(!!!!!) (Best Pair 1971) 12AX7=ECC83 Philips Holland ribbed plates "O" getter halo NOS 1971 same date codes (1.4/1.4ma and 1.5/1.5ma) (close Gm)
(!!!!!) (Best Pair) 6DJ8=ECC88 Philips Miniwatt Holland "o" getter halo NOS 1963-1964 (19.6/18.0ma and 17.0/20.0ma)
(!!!!!) (Best Single) 6DJ8=ECC88 Philips Miniwatt Holland "O" getter 1965 (21/23ma) (Highest mA and Gm)
(!!!!!) (Best Value Pair) 12AX7=ECC83 Philips Holland like new 1968 same date codes (1.5/1.7ma and 1.7/1.8ma) (Highest mA and Gm) 1-3% matched
(!!!!!) (Holland Single) 12AU7 Pope Holland NOS 1971 dimpled disc halo (12/13.4ma)
(!!!!!) (Recommended Pair) E80CF=7643 Valvo branded Philips Miniwatt SQ NOS 1963 (PREMIUM 6BL8 SUB) (Tuners)
(!!!!!) (Recommended Pair) PCC88=7DJ8 Philips Holland NOS 1973 (11.5/11.0ma and 11.5/12ma) (Similar sound to 6DJ8 Holland) (sweet sound)
(!!!!) (2nd Best Pair 1968) PCC88=7DJ8 Philips Holland "O" getter NOS 1968 (12.6/14.2ma and 15/12ma) (sweet sound)
(!!!!) (3rd Best Pair 1968) PCC88=7DJ8 Philips Holland "O" getter NOS 1968 (13.2/10.4ma and 10.4/11.2ma) (sweet sound)
(!!!!) (Best Holland Pair #1) E80CC=6085 Philips SQ Holland 1967 (6.2/7.0ma and 6.4/7.0ma) 1-2% matched
(!!!!) (BEST Holland Pair) ECC88=6DJ8 Philips Holland NOS 1972-1974 (13.4/12.4ma and 13.8/12.4ma)
(!!!!) (Best Mullard Single) E88CC/01=6922 Mullard England Mitcham plant NOS 1964 (11.0/11.2ma) (3D MIDS, low noise) (mic)
(!!!!) (Best Pair #1) ECC82=12AU7 Philips Holland NOS 1972 (12/12ma and 11.2/11.8ma) (Highest mA and Gm)
(!!!!) (Best Pair #2) ECC82=12AU7 Philips Holland NOS 1971 (10.8/11ma and 10.0/10.4ma)
(!!!!) (Best Pair 1968) PCC88=7DJ8 Philips Holland "O" getter NOS 1968 (14/14ma and 13.5/13.2ma) (sweet sound)
(!!!!) (Best Single) E80CC=6085 Philips Holland SQ gold pins NOS 1967 (6.4/7.0ma) (same Gm)
(!!!!) (Best Sounding Holland Pair) E80CC=6085 Philips SQ Holland 1967 (5.7/6.8ma and 5.7/6.9ma) 1-2% matched
(!!!!) (Best Value 1965) 12AX7 Philips Miniwatt Holland like new 1965 (Gm=1900/1700 and 1.5/1.2ma)