(!!) (Best Pair) 412A Western Electric NOS "D" getter halo 1959 (51-52/40 x 2 tubes)
(!!) (Best Value Pair) ECC84=6CW7 Ultron East Germany by RFT 1970's 1-3% matched (9.0/9.6ma and 9.0/9.3ma)
(!!) (Good Value) 12AX7A/7025 Sylvania branded RCA used/good 1970's (Gm=1600/2800)
(!!) (Recommended Single) 6AN8 Sylvania NOS 1960 era (17/14.8ma)
(!!) (Recommended Single) 6AN8A Sylvania NOS 1960's (16.4/11.5ma)
(!!) (Recommended Single) JG-5751 GE gray plates double mica "O" getter NOS 1965 (2.1/2.1ma)
(!!) 12AX7A/7025 Sylvania branded RCA NOS 1970's (Gm=2100/2000)
(!!) 12BH7A Westinghouse black plates "U" getter used/good 1950's (6.2/7.2ma)
(!!) 5R4GYB RCA branded Westinghouse NOS 1970 large getter (50/40 and 52/40)
(!!) 5R4GYB RCA NOS 1962 large getter (54/40 and 50/40)
(!!) 5R4GYB RCA rebranded Raytheon NOS 1960's (50/40 and 53/40)
(!!) 6C4 Sylvania NOS 1970's (11.2ma)
(!!) AZ1 Miniwatt Dario France NOS 1954-1955 (1 in stock)
(!) (#1 6CW7 Best Single) ECC84=6CW7 Mullard branded Philips Miniwatt Holland 1962 (10.6/11.0ma)
(!) (Best Value Pair) ECC84=6CW7 Ultron East Germany by RFT 1970's 2-3% matched (9.6/11.6ma and 9.0/11.0ma)
(!) (sold out) 8416 Amperex PQ USA NOS 1965-1967
(!) 12AU7=ECC82 Miniwatt France used/good 1970 (10/9.6ma)
(!) 448A Western Electric tipped top used/like new 1965-1966 (1 pair: 32.6ma and 31.8ma) (matched on Amplitrex)
(!) 7308 Philips SQ Holland NOS 1965 faded printing in white box (13.4/19.4ma)
(!) JAN-6186=6AG5WA Sylvania NOS 1969 (7.7ma)