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420A WE NOS "D" getter 1962 (1.9/2.3ma)
420A WE NOS "D" getter 1970 (1.4/1.8ma)
437A Western Electric (sold out)
(!!!) (Best Pair #2) 448A Western Electric "tipped top" used/tests like new D getter halo 1965-1966 reboxed (30ma and 31.8ma) (close Gm matching)
(!!) (Recommended Pair) 448A Western Electric tipped top used/good 1965 same date codes (26ma and 27.5ma) (close Gm matching)
485 National Union used/good 1940's (6.2ma)
485 Sparton engraved base used/good 1936 (5.5ma)
485 Sylvania branded Philco NOS 1940's (6.0ma)
485 Sylvania engraved base used/good 1934 (8.3ma)
485 Sylvania used/good 1930's no printing (7.9ma)
4BC5 NOS (20 in stock)
4BQ7A Raytheon Japan NOS (6 in stock)
4KR8
4RHH2=4BQ7A Raytheon Japan NOS (0 in stock)
(!!) 6EW7 GE PHILCO BIG BOTTLE black plates NOS 1964 (4.8/62ma)
(!!!!!) (Best Pair #1) ECL82=6BM8 Philips and Philips Miniwatt Holland NOS 1963-1966 (2.1/39ma and 2.0/40ma) 1-2% matched
(!!!!) 5654=6AK5W GE Dumont NOS 1970's (10.2ma)
(!!!!) (Best Value Single) ECC82=12AU7 Telefunken Germany <> Bottom ribbed plates NOS 1969 faded printing (10.8/10.0ma) (Highest Gm)
(!!!) (Recommended Single) 6EU7 RCA NOS 1967 (50/32 and 46/32)
(!!) EF184 Siemens Germany NOS 1967 (7ma)
