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(!) E80CF Valvo Germany rebranded Philips Miniwatt SQ "PINCHED WAIST" NOS 1961 (6BL8 substitute)
(!) E80CF Valvo Germany rebranded Philips Miniwatt SQ "PINCHED WAIST" NOS 1962 (6BL8 substitute)
(READ REVIEW) ECF80=6BL8 Telefunken Germany <> bottom NOS 1971 (11.5/9.6ma and 12.2/9.5ma) (best sound)
7643 Valvo branded Amperex PQ Germany "PINCHED WAIST" NOS 1960 (6BL8 sub)
E80CF=7643 Philips Miniwatt SQ Germany "PINCHED WAIST" used/good 1961 (11.4/10.4mA) (6BL8 sub)
E80CF=7643 Valvo Germany branded Philips 1970 (11.4/9.0ma)
