(!!!!) (Good Value 1962) M8137=12AX7S Philips SQ France ribbed plates NOS 1962 (1.1/1.1ma and Gm=1550/1450) (Special Quality 12AX7)
(!!!!) (Good Value Pair) 12SN7GTA GE coin-base side getter NOS 1981 (7.4/7.4ma and 7.2/8.0ma) 1-5% matched
(!!!!) (HOLLAND PAIR) 12AU7=ECC82 Philips and Philips Miniwatt Holland NOS "o" getter halo 1965-1967 (11.2/11.2ma and 12/11.2ma)
(!!!!) (microphonic single) 6922=E88CC Siemens Halske Germany gray shield NOS 1965 (A0 Series=1st series) (15.2/15.8ma)
(!!!!) (NICE SINGLE) JAN-6922 Amperex USA like new 1971 (13.4/12.6ma)
(!!!!) (Pair) 0D3 Hytron NOS and like new 1948 (argon)
(!!!!) (Recommended GE Pair) 5U4GB GE NOS 1966 (56-59/40 and 56-58/40)
(!!!!) (Recommended GE Pair) 5U4GB GE NOS 1968 same date codes (58-60/40 and 58-60/40)
(!!!!) (Recommended GE Pair) 6BQ5 GE NOS 1969-1970 (64ma and 65ma) (recommended for FIXED-BIAS amp only due to high current)
(!!!!) (Recommended Mullard Single) 6DJ8 RCA Mullard NOS "A" Frame getter halo 1976 (10.6/12.6ma)
(!!!!) (Recommended Pair) 12AX7 Philips and Valvo Holland NOS 1965-1966 era (1.2/1.1ma and 1.3/1.2ma)
(!!!!) (Recommended Pair) 12AX7=ECC83 Philips and Pope Holland NOS 1965-1967 (2.1/1.8ma and 1.6/2.1ma) (Highest mA and Gm)
(!!!!) (Recommended Pair) 12BH7A RCA gray plates NOS 1963-1969 same build (11.0/11.2mA and 10.6/12.0mA) (Art Audio, Manley Mac, VTL)
(!!!!) (Recommended Pair) 12SN7GTA GE coin-base side getter NOS 1980 (11.2/9.8ma and 11.2/9.8ma) 1-2% matched
(!!!!) (Recommended Pair) 417A Western Electric NOS 1969 (28ma and 33ma)
(!!!!) (Recommended PAIR) 5U4GB Raytheon NOS "O" getters 1962 (58-60/40 x 2 tubes)
(!!!!) (Recommended Pair) 5U4GB RCA NOS and like new 1962 (56-58/40 and 56-58/40)
(!!!!) (Recommended Pair) 6922 Sylvania NOS 1960's (11.6/13.4ma and 12.6/13.6ma)
(!!!!) (Recommended Pair) 6922 Sylvania NOS 1960's (12.0/12.8ma and 11.0/12.4ma)
(!!!!) (Recommended Pair) 6922 Sylvania NOS 1960's-1970 era (10/12.2ma and 10.5/12ma)
