(!!) (Good Value) JAN-5751 GE double mica gray plates NOS 1987 (2.3/2.3ma) 1-2% section balance
(!!) (Recommended Single) 5751 Siemens Halske triple mica branded Philips SQ like new 1968 (2.4/2.4ma) 1% section balance
(!!) (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)
(!!) 5751 Sylvania misbranded 12AX7WA NOS 1960's (1.8/2.0ma)
(!!) 5751W1 Sylvania triple mica "O" getter halo used/good early 1960's misbranded 12AX7WA (1.8/2.0ma)
(!) (slightly microphonic) 5751 Sylvania rebranded RCA black plates triple mica "D" getter used/good 1950's (2.0ma/2.2ma)
(slightly microphonic) JAN-5751 Sylvania NOS 1973 (2.0/2.3ma)