(!!)7025 Sylvania gray pinched plates "D" getter 1960 era used/good (Gm=2100/2100)
(!!) 7025 CBS used/good "U" getter halo 1960 era (Gm=1400/1300 and 0.7/0.7ma)
(!!) 7025 Westinghouse gray pinched plates "D" getter NOS 1963 (Gm=1600/1700)
(!!) 7025 Westinghouse "D" getter 1960 era used (Gm=1200/1300)
(!!!) (Recommended Single) 7025 Amperex Globe Logo Holland low hours/like new 1967 (Gm=1800/1600 and mA=1.3/1.2ma)
(!!!!!) (Best Value Single) 12AX7=ECC83 Mullard UK like new 1973 (1.8/1.1mA and Gm=2000/1600)
(!!!) 7025 RCA ribbed gray plates used/good 1960's (Gm=1350/1450 and 0.7.0.8mA)
(!!!!!) (Best Single 1965) 12AX7 Mullard Bell & Howell UK NOS 1965 (1.3/1.2ma and Gm=1700/1600)
(!!!) 7025 RCA ribbed gray plates used/good 1960's (Gm=1350/1600 and 0.6./1.1mA) (V1 guitar amp)
