ECH42=6CU7 International Germany NOS made by La Radiotechnique France early 1960's (3 in stock)
ECH42=6CU7 Telefunken Germany <> bottom NOS 1966 (1 in stock)
ECH42=6CU7 Valvo Germany NOS made by La Radiotechnique France early 1960's (2 in stock)
ECH81=6AJ8 Amperex Italy NOS 1968 (6.5ma and 12ma)
ECH81=6AJ8 Philips Miniwatt Holland used/strong 1961 (5.9ma and 12.3ma)
ECL86=6GW8 Westinghouse Toshia Japan NOS 1972 pins cleaned of oxidation (1.4ma and 35ma)
EF11 RSD Germany NOS 1950's (6.1ma) (tested on Amplitrex)
EF11 Telefunken Germany used/very good 1949 (5.6ma) (tested on Amplitrex)
EF12 Telefunken Germany used/tests like new, stamped top 1940's (sold out)
EF12 Ultron Germany NOS 1950's (3.9ma)
EF183=6EH7 Amperex Bugle Boy Holland 1960 "D" getter halo (11.5ma)
EF183=6EH7 Amperex Holland 1959 "D" getter halo (12ma)
EF183=6EH7 Siemens branded Telefunken NOS 1963 (15ma)
EF22 Mullard and Tungsram NOS
EF40 Mullard France NOS 1961 (3.7ma)
EF40 Philips France NOS 1966 (2 in stock)
EF40 Siemens by Valvo Germany NOS 1956 (3.0ma)
EF41 European Brands NOS (4 in stock)
EF42 NOS (10 in stock)
EF5 NOS (3 in stock)
