(!!) (Recommended pair) E83F=6689 Philips SQ Holland NOS gold pins 1974 (9.4ma and 9.6ma)
(!!) (Recommended Single) 6U8A GE Amperex NOS 1974 (13.5ma/10.2ma)
(!!) (Recommended Single) 6U8A GE NOS 1977 (14.2ma/10ma)
(!!) (SINGLE) 12AT7 US Brands used/good
(!!) (SINGLE) 12AX7=ECC83 Telefunken Germany <> bottom ribbed plates low hours/like new 1962 (Gm=1500/1500) (0.9/8ma)
(!!) (Single) PCC88=7DJ8 Philips Holland 1973 (9.5/10.6ma)
(!!) 12AX7 Telefunken Germany ribbed plates used/good 1960's smeared printing (Gm=1300/1700 and 0.9/1.4ma)
(!!) 6U8=ECF82 Tungsram Hungary rebranded Haltron NOS 1970's (14.3ma and 7.6ma)
(!!) 6U8A Westinghouse NOS 1967 (17.8ma and 9.5ma)
(!!) 6U8A Westinghouse NOS 1967 (24ma and 7.5ma)
(!!) EC92 Siemens Halske NOS rebranded Philips Import 1969 "O" getter halo (9.2ma)
(!!) EC92 Siemens Halske NOS rebranded Philips Miniwatt 1968 "O" getter halo (6.8ma)
(!!) ECF82=6U8 Telefunken Germany <> bottom NOS 1968-1969 faded printing (14ma triode and 8.6ma pentode)
(!!) EF184 Siemens Germany NOS 1967 (7ma)
(!!) EF184 Siemens Halske branded Zenith Germany NOS 1969 (9.4ma)
(!!) EF184=6EJ7 Mullard UK in Kradlepack box 1969 (9.7ma)
(!!) EL34 Telefunken Germany used/good/75% 1967-1971 in white box (62ma)
(!) (BEST SINGLE) 6BE6 RCA NOS 1970's (2.0ma Gm=1000)
(!) (Best Single) E83F=6689 Siemens Holland NOS gold pins 1968 (15.2ma)
(!) (Best Single) ECF80=6BL8 Telefunken Germany <> bottom NOS 1961 slightly faded top getter (12.8/25ma) (highest Ma and Gm)