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(!!!) (Single) E80CC=6085 Philips Holland branded RTC NOS 1975 (5.4ma/5.5ma)
(!!!) (Good Value) 12AX7 RCA "long gray plates" with "D" getter used/good 1950's faded printing (0.8/0.8mA and Gm=1500/1600) Gm like new
(!!!!) (Best Value Single 1960) 12AX7 GE tall gray ribbed plates "U" getter tests like new 1960 faded printing (Gm=1600/1600 and 1.1/1.3ma)
AX2D21=2D21 Amperex Holland 1958 (1 in stock)
(!!!) (Recommended Single) 12AT7 Telefunken Germany <> bottom NOS 1957 (9.8ma/7.2ma)
6DJ8=CV5358 Holland A frame used good 1971 (9.6/10ma)
(!) (BEST VALUE) EL34 Philips Holland brown base used/good 1960 era (95.5ma)
(!!) 12AX7 GE branded Video black plates D getter 1957 used mis-matched triode sections (1.1ma/0.6ma)
(microphonic single) 12AT7 Philips Miniwatt made in Hamburg, Germany by VALVO NOS "D" getter halo 1959 (8.8/10.2ma)
(!!!) (Best Value) 12AT7 Mullard UK NOS 1969 (9.4/7.6ma)
(!!) 12AX7 Sylvania branded Philco NOS 1965 (Gm=2400/2400 and 1.6/1.5ma) 1-3% section balance
(!!) (Good Value) 12AT7=ECC81 Siemens Halske Germany used/strong 1964 (8.2ma/12.2ma)
12AT7 East Germany branded "M" Mühlhausen NOS 1970's (7.2/7.6ma)
(!!!!) (Best Single) 12AX7A Sylvania red print NOS 1960's (Gm=3000/3500 and 2.5/2.9ma)
(!) (Best Single) 7247=12DW7 Amperex Globe Logo by Matsushita Japan NOS 1967 similar sound to Mullard (1.5ma and 11.6ma) (High mA and Gm)
(!) 12AT7 East Germany branded "M" Mühlhausen NOS 1970's (8.4/9.0ma)
(!!) (Single) 12BH7A GE ribbed plates NOS 1977 (9.2/11.2ma)
(!!!!!) (Best Single 1959) ECC83=12AX7 Telefunken Germany <> bottom ribbed plates NOS 1959 (1.1/1.0ma and Gm=1700/1600) 1-3% section balance
(!!!) (Best Value Single 1965) 12AX7=ECC83 Siemens Germany ribbed plates used/good (0.9/0.8ma and Gm=1500/1400)
(!!!) (Single) 12AT7 GE gray plate NOS 1978 (9.5ma/12.5ma)
