6240G Luxman by NEC Japan NOS 1960's (6.7/8.0ma)
6384 Tungsol used/good 1960's (63.5ma)
6384 Tungsol used/good 1960's (68.5ma)
6AU5GT RCA gray plates NOS 1960 (57ma)
6AU5GT RCA gray plates NOS 1960 (66ma)
6AW8A GE branded Westinghouse NOS 1964 (3.8/24ma)
6AW8A GE NOS 1976 (4.9/21ma)
6BL7GTA RCA coin-base NOS 1970's (31/32ma)
6BQ5 RCA gray plate used/good 1967 (32.6ma)
6BQ5 RCA Magnavox gray plate used/good 1961 (44ma)
6CB5A RCA NOS 1973 (74ma)
6CB5A RCA NOS 1973 (86ma)
6CB5A RCA NOS faded 1970 (113ma)
6DJ8 Amperex Bugle Boy Holland used/like new 1964 (read review)
6FW8 RCA "D" getter NOS around 1960
6X4WA GE "D" getter 1960 era rebranded 6X4 Amperex 1971 used/good (55/40 and 56/40)
7308 Amperex PQ USA "D" getter used/70% 1960 (VR0 series=1st series) (9.2/9.5ma)
7591 Westinghouse branded RCA NOS 1963 (51.5ma, Gm=9050)
930 RCA used 1960
ECC84=6CW7 Mullard International NOS 1960 (8.8/12.2ma)