(!!!!!) (~ Best KT88 Gold Lion Single ~) KT88 Genalex Gold Lion England NOS circa 1960 in original box (155ma)
(!!!!) (#1 6550A GE Pair) 6550A GE NOS "stapled plates" around 1980 same date codes (132ma and 134ma) (excellent pair)
(!!!!) (#2 6550A GE Pair) 6550A GE NOS "stapled plates" around 1980 same date codes (121ma and 123ma)
(!) (#1 6550A GE single) 6550A GE stapled plates NOS around 1980 (125.6ma)
(!) (#3 6550A GE single) 6550A GE stapled plates NOS around 1980 (118.5ma)
(!) 6550 Sylvania branded RCA used/tests like new 1984 (134ma)
(!) 6550 Sylvania used/tests like new 1970's no printing (132ma)
6550 Sylvania branded RCA used/good 1977 (122ma)
6550 Sylvania branded RCA used/good 1979 (112ma)
6550 Sylvania used/very good 1970's rattle inside base (126ma)
6550A GE used/55% 1970's "welded plates" (82ma)
