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EC88=6DL4 Valvo branded Amperex Germany NOS 1972 (11.5ma)
ECC34 Mullard NOS 1950's (9ma/10ma)
ECC40 Philips NOS made by La Radiotechnique, Chartres/France 1969 (6.2/6.9ma)
ECC82=12AU7 Siemens Halske "Long Ribbed Plates" and "O" getter NOS 1958 (10.4/11.8ma)
ECC83=12AX7 East Germany used/good 1970's in white box (1.0/0.7ma)
ECC83=12AX7 Mullard UK BVA long plates "O" getter like new 1958 (f91 series) (1.2/1.2ma)
ECC84=6CW7 Mullard International NOS 1960 (8.8/12.2ma)
ECC84=6CW7 Mullard Sonotone NOS 1960 (11.2/11.8ma)
ECC84=6CW7 Siemens Germany Sonotone NOS 1959 (11.2/13.8ma)
ECC99 JJ (best identical substitute is 12BH7A RCA, Raytheon, Sylvania and GE)
ECF83 Siemens branded Valvo NOS 1966 (1 in stock)
ECF83 Telefunken rebranded International 1960's (3 in stock)
ECF86=6HG8 Valvo France NOS (4 in stock)
ECH3 Philips Miniwatt 1940's used/good
ECH3 Tungsram used/good 1940 era
ECH35 Philips Miniwatt like new 1940's
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)
