(!!!!) (#1 7308 Amperex USA Pair) JAN-7308 Amperex USA NOS 1971-1972
(!!!!) (#1 7308 Amperex USA single) 7308 Amperex Globe Logo USA NOS 1964 (16.4/16.0ma)
(!!!!) (#1 7308 Mullard Pair) 7308=E188CC Mullard England NOS 1972 (Highest Ma and Gm) 1-2% matched
(!!!!) (#1 7308 MULLARD PAIR) E188CC=7308 Philips SQ by Mullard NOS 1970 1-2% matched (matched on Amplitrex)
(!!!) (#1 7308 Siemens Single Tube) E188CC=7308 Siemens Halske NOS 1972 (12.4/16.4ma)
(!!!) (#2 7308 Mullard Single) 7308=E188CC Mullard England NOS 1970 1% section balance (14/14ma)
(!!!) (#3 7308 Mullard Single) 7308=E188CC Mullard England NOS 1970 (13.5/18.8ma)
(!!) (#1 7308 from 1963) 7308=E188CC Amperex PQ Holland Gold Pins used/very good 1963 (14.8ma/15.6ma)
(!) (#1B 7308 SINGLE) E188CC=7308 Philips SQ Holland NOS 1972 (11/13.8ma)
(!) (#3 BEST 7308 SINGLE) E188CC=7308 Holland NOS 1966 rebranded IEC MULLARD (11.6/13ma)
(!) (#4 BEST 7308 SINGLE) E188CC=7308 Valvo Holland NOS 1972 (10.6/12.4ma)
(!) 7308 Philips SQ Holland NOS 1965 faded printing in white box (13.4/19.4ma)
7308 Amperex PQ USA "D" getter used/70% 1960 (VR0 series=1st series) (9.2/9.5ma)
