(!!!) 7025 RCA ribbed gray plates used/good 1960's (Gm=1350/1600 and 0.6./1.1mA) (V1 guitar amp)
(!!!) 7025 RCA ribbed gray plates used/good 1960's faded printing (Gm=1400/1600 and 0.9/1.1mA) (V1 guitar amp)
(!!!) 7025 RCA ribbed gray plates used/good 1972 (Gm=1450/1400 and 0.9/0.8mA) (V1 guitar amp)
(!!!) 7025 RCA ribbed gray plates used/tests like new 1960's faded printing (Gm=1500/1500 and 1.1/0.9mA) (V1 guitar amp)
(!!) (Best Value Single) 12AX7 Telefunken Germany <> bottom ribbed plates used/good 1960 (0.8/0.8mA and Gm=1400/1400)
(!!) (Best Value Single) 12AX7=ECC83 Mullard UK copper grid posts used/good 1965 (Gm=1400/1400)
(!!) (Best Value Single) ECC83=12AX7 EI Yugo Telefunken smooth plates clone 1973 era branded Amperex NOS 1985 (1.2/1.2ma and Gm=1700/1800)
(!!) (Best Value Single) ECC83=12AX7 Tungsram Hungary 1980 era branded Amperex NOS 1985 (1.3/1.6ma and Gm=1800/1800)
(!!) (Good Value) ECC82=12AU7 Telefunken Diamond Bottom ribbed plates used/good 1960's (8.2ma/8.8ma)
(!!) (SINGLE) 12AX7=ECC83 Telefunken Germany <> bottom ribbed plates low hours/like new 1962 (Gm=1500/1500) (0.9/8ma)
(!!) (SINGLE) 7025 RCA gray NOS 1970 era (Gm=1450/1600 and 1.0/1.2mA)
(!!) 12AX7 Telefunken Germany ribbed plates used/good 1960's smeared printing (Gm=1300/1700 and 0.9/1.4ma)
(!) (MULLARD CLONE) 12AX7=ECC83 Matsushita Japan NOS 1960's (Gm=1600/1500 and 1.2/1.0ma) (similar to Mullard)
(!) (MULLARD CLONE) 12AX7=ECC83 Matsushita Japan ribbed plates used/good 1960's (Gm=1450/1400 and 1.0/0.9ma) (similar to Mullard)
