(!!!) (Single) 6J5G Sylvania engraved base black oval plate used/very good 1930's (8.0ma)
(!!!) (Slightly microphonic Single) 12BH7A CBS Oval Black Plates "U" getter NOS 1960 era (8.4/9.0ma)
(!!!) 12AT7WB Raytheon NOS black plates triple mica used/good 1960's (7.8/8.4ma)
(!!!) 6336 Chatham metal plates used 1954 (59/74ma)
(!!!) 6336 Chatham metal plates used 1957 (57/53ma)
(!!!) 6BL7GTA GE branded Marconi NOS 1960 era tilted glass (46/53ma) (High Gm) strong single
(!!!) 6EA7 Tungsol NOS 1960's (1.8ma/64ma) (strong single)
(!!!) 6SL7WGT Sylvania branded Raytheon 5691 brown base round black plates "D" getter halo used/good 1950's (1.6/1.8ma)
(!!!) 6SN7GT Raytheon parallel plates NOS 1953 (8.5/10ma)
(!!) (#1 12AU7 Raytheon from 1954) 12AU7 Raytheon gray ribbed plates "D" getter halo NOS 1954 (10.6/11.2ma)
(!!) (#1 12AU7 Raytheon from 1956) 12AU7 Raytheon gray ribbed plates super large "U" getter halo NOS 1956 (10.4/10.8ma) (High Ma and Gm)
(!!) (#1 12AU7A Raytheon 1960's single) 12AU7A Raytheon Uniline gray ribbed plates "O" getter NOS 1960's (8.2/11ma)
(!!) (Best Single) 5AS4A RCA NOS 1958 (58/40 and 58/40)
(!!) (Best Single) 6EM7 RCA black plates NOS 1969 (2.9ma and 53ma)
(!!) (Best Single) 6J5GT Sylvania lightning logo round black plate NOS 1946 (10.4ma)
(!!) (Best Single) JAN-5755 Raytheon Black Plates NOS 1971 (2.3/2.4ma) close triode balance
(!!) (Best Value Pair) 6JC6A Raytheon Japan NOS 1970's same build (9ma and 9ma) (High Gm)
(!!) (Best Value Single) JAN-5687WA Raytheon bronze plates used/tests like new 1969 (41.5/43.5ma) (High Ma and Gm)
(!!) (Good Value Pair) 6AQ5A International Japan tests like new 1970's faded printing (40.8ma and 42.8ma)
(!!) (Good Value Single) JRP-5687WA Raytheon bronze plates used/good early 1960's (33/31.6ma)
