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ECH81=6AJ8 Valvo Germany like new 1960 (6.3ma and 10.6ma)
EF11 RSD Germany NOS 1950's (6.1ma) (tested on Amplitrex)
EF11 Telefunken Germany used/very good 1949 (5.6ma) (tested on Amplitrex)
EF40 Mullard France NOS 1961 (3.7ma)
EF40 Philips France NOS 1966 (2 in stock)
EF41 European Brands NOS (4 in stock)
EF800 Telefunken
EF804 Telefunken Germany NOS 1957 (2.7ma)
EF804 Telefunken Germany NOS 1959 (2.4ma)
EF804 Telefunken Germany NOS 1960's (2.9ma)
EF804 Telefunken Germany NOS 1964 (3.2ma)
EF804 Telefunken Germany NOS 1965 (3.2ma)
EF804 Telefunken NOS made in Berlin 1957 (3.5ma)
EF83 Telefunken <> bottom Germany NOS 1962 (4.0ma Gm=1800)
EF83 Valvo Germany NOS 1962 (4.7ma Gm=1800)
EF85 Philips Miniwatt Holland NOS "D" getter 1961 (3 in stock)
EF85=6BY7 Siemens branded Telefunken NOS 1969 (3 in stock)
EF86 Amperex East Germany NOS 1970's (2.2ma)
EF86 International Russian NOS 1979 (3.7ma)
EF86 United Russian NOS 1980's (3.1ma)
