(!!!!) (Best 6201 Pair) 6201=E81CC=12AT7 Valvo Hamburg Germany branded Philips Miniwatt SQ NOS 1962-1963 (10.0/10.6ma and 10.0/10.8ma) 1-2% matched
(!!!!) (Best Holland Pair #1) E80CC=6085 Philips SQ Holland 1967 (6.2/7.0ma and 6.4/7.0ma) 1-2% matched
(!!!!) (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
(!!) (Good Value Single) 6201=12AT7 Valvo Germany rebranded Philips SQ 1970 (6.8/7.8mA)
