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EBF83=6DR8 Siemens branded Telefunken NOS 1960's (3 in stock)
EC55 Mullard Holland UHF Disc-Seal Triode NOS
EC81 Philips Holland Gold Pins NOS 1966 (28ma)
(!!) (BEST PAIR #2) EC86 Telefunken Germany <> bottom gold pins NOS 1960 (10.5ma and 11.2ma) (close Gm)
EC88 Siemens Germany gold pins NOS 1965 (14ma)
EC88 Telefunken Germany NOS 1964 (16ma)
EC88=6DL4 United France NOS 1981-1982 (2 single tubes)
EC88=6DL4 United France NOS/70-75% (1 pair)
EC88=6DL4 Valvo branded Amperex Germany NOS 1972 (11.5ma)
ECC34 Mullard NOS 1950's (9ma/10ma)
(!) (BEST PAIR) ECC808=6KX8 Mullard Made in Germany by VALVO NOS 1969 same date codes (1.1/1.3ma and 1.2/1.1ma)
ECC82=12AU7 Siemens Halske "Long Ribbed Plates" and "O" getter NOS 1958 (10.4/11.8ma)
(!!!) (Best Value Single) ECC83=12AX7 Siemens Halske Germany used/good 1960's faded date code (1.3/0.9ma and Gm=1700/1500)
ECC83=12AX7 East Germany used/good 1970's in white box (1.0/0.7ma)
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)
(!) ECC88=6DJ8 Siemens Halske Germany branded Hewlett Packard used/60-65% small "o" getter halo 1964 (11.8/11.2ma)
ECC99 JJ (best identical substitute is 12BH7A RCA, Raytheon, Sylvania and GE)
(READ REVIEW) ECF83 Telefunken NOS 1965
