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(!!!) (BEST PAIR #2) ECC808=6KX8 Telefunken Diamond Bottom NOS 1963-1966 (1.1/1.3ma and 1.3/1.0ma)
(!!!) (Pair) ECC808=6KX8 Telefunken Diamond Bottom NOS 1965 (1.0/0.8ma and 0.8/1.0ma)
(BEST VALUE) ECC808=6KX8 Telefunken Diamond Bottom <> NOS 1969 faded printing from rubbing inside box (0.8/1.0ma Gm=1350/1500)
(!!) (BEST VALUE PAIR) ECC808=6KX8 Mullard Made in Germany by VALVO NOS 1969 same date codes (1.1/1.3ma and 1.2/1.1ma)
(!!!) (Best Single) ECC808=6KX8 Telefunken Diamond Bottom NOS 1968 (1.6/1.4ma Gm=1800/1700)
(!!!) (Best Pair #2) ECC808=6KX8 Telefunken Diamond Bottom NOS 1965 (1.0/0.9ma and 0.9/1.0ma)
(!!!) (Best Overall Pair) ECC808=6KX8 Telefunken Diamond Bottom NOS 1962 (1.3/1.3ma and 1.4/1.3ma)
