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(!!!!) 5654=6AK5W GE Dumont NOS 1970's (10.2ma)
(!!!) (Best Single - black plates) 12AX7 RCA Bell and Howell long ribbed black plates "D" getter used/tests like new 1950's faded printing (Gm=1700/1700) 1% section balance
(!!!) (slightly microphonic) JRC-5751WA RCA black plates triple mica D getter 1957 NOS (2.3ma/2.2ma) (1-3% section balance
(!!) (Best Pair) 5651 RCA NOS 1953 (rare) (LAMM)
