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(!!) 12BH7A RCA gray plates used/good 1960's (8.0/11.2ma)
(!!) 12BH7A RCA gray plates used/good 1970 era (8/9ma)
(!!) 12BH7A Sylvania NOS pinched plates 1970's (7.4/8.8ma)
(!!) 12BH7A Westinghouse black plates "U" getter used/good 1950's (6.2/7.2ma)
(!!) 12SN7GT Sylvania Philco chrome top black plates NOS 1956 (8.2/8.4ma)
(!!) 13D3 Brimar UK black plates tests like new 1962 (6.8ma/7.2ma) (similar to 12AU7)
(!!) 227 National balloon used/good, rattle inside base 1930 era (5.3ma)
(!!) (Best Single) 26 Deforest Audion balloon tests like new 1920's (8.3ma, Gm=1300)
(!!) 26 RCA Radiotron balloon used/good 1920's (6.2mA Gm=900)
(!!) 286A Western Electric "top printing" NOS 1942-1945 (6.9ma) (Buy two 286A receive 5% discount)
(!!) 286A Western Electric low hours/tests like new "top printing" 1942-1945 (6.8ma)
(!!) 5751W1 Sylvania triple mica "O" getter halo used/good early 1960's misbranded 12AX7WA (1.8/2.0ma)
(!!) 5842 Raytheon branded RCA NOS 1976 (20ma and Gm=20,000)
(!!) 5963=12AU7 RCA NOS 1963 (9.2/9.6ma)
(!!) 6350 RCA NOS triple mica "U" getter NOS 1960 era (12.8/13.2ma)
(!!!) (BEST PAIR #3) 6AN8A RCA NOS 1967-1968 (13.2/12.8ma and 14/11ma)
(!!) 6AN8A GE Great Britain NOS 1970 era (15/12ma)
(!!) 6BH6 GE black plate NOS "U" getter halo 1953 (6.5ma)
(!!) 6BH6 GE black plate NOS "U" getter halo 1956 (8.0ma)
(!!) 6BM8=ECL82 Philiups Miniwatt by Mullard used/good 1959 (1.8ma/23ma)
