(!!!!) (Recommended Single) JG-5751WA GE NOS black plates triple mica D getter halo 1955 (2.1/2.5ma)
(!!!) (Good Value Single) 5751 RCA black plates triple mica "D" getter low hours/tests like new 1950's (2.4ma/2.5ma)
(!!!) (Recommended Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.2/2.4ma)
(!!!) (Best Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.7/2.7ma) (1-2% section balance)
(!!) (Good Value) 5751 GE "5 Star" NOS 1970 (1.9/2.0ma)
(!!) (Recommended Single) JG-5751 GE gray plates double mica "O" getter NOS 1965 (2.1/2.1ma)
(!!) 5751 GE 5 Star used/good 1970 (1.6/1.7ma)
(!!) 5751W1 Sylvania triple mica "O" getter halo used/good early 1960's misbranded 12AX7WA (1.8/2.0ma)
(!!) (Good Value) JAN-5751 GE double mica gray plates NOS 1987 (2.3/2.3ma) 1-2% section balance
(!) (slightly microphonic) 5751 Sylvania rebranded RCA black plates triple mica "D" getter used/good 1950's (2.0ma/2.2ma)
(!!!) (Best GE Pair) JAN-5751 GE NOS 1981-1982 (2.7/2.8ma and 2.6/2.9ma) 1-3% matched
(slightly microphonic) JAN-5751 Sylvania NOS 1973 (2.0/2.3ma)
(!!!!) (Best Single) 5751 Siemens Halske Germany triple mica NOS 1966 (2.6/3.0ma)
(!!!!) (Recommended Pair) JRC-5751 RCA black plates test like new 1960's faded printing (2.8/2.7ma and 2.5/2.5ma) (high Gm)
(!!!!) (Recommended Single) JG-5751WA GE black plates triple mica D getter 1958 like new (2.9/2.8ma)
(!!!) (Best Single) 5751 Sylvania NOS 1970's (2.4/2.4ma) 1% section balance
(!!!!!) (Best Pair) JG-5751WA GE black plate triple mica U getter like new 1958 (2.3/2.3ma and 2.4/2.3ma)
(!!) (Recommended Single) 5751 Siemens Halske triple mica branded Philips SQ like new 1968 (2.4/2.4ma) 1% section balance
(!!) (Good Value Single) JAN-5751 GE double mica gray plates NOS 1987 (2.9/3.1ma)
(!!!) (Good Value Single) GL-5751 GE "5 Star" black plates triple mica D getter 1954 used/good (2.1/2.3ma)
