(!!) (slightly microphonic) 12AU7A Raytheon black ribbed plates "D" getter halo black coated glass 1951 (8.8/9.6ma)
(!!) 6L6GAY Sylvania brown base NOS 1956 aged 48-hours (84.2ma)
(!!) 6V6GT Philco by Sylvania tests like new 1957 (42.2ma)
(!) (PAIR) 807 Hytron black plate used/good 1940's same build (54ma and 56.8ma)
1635 RCA coated glass NOS 1950-1953 (2 in stock)
6A3 Ken Rad coated glass NOS 1950 (82ma)
6A3 RCA Victor NOS 1948-1949 (62ma)
6A3 Tungsol coated glass used/good 1940's (44ma)
6A3 Tungsol coated glass used/good 1940's (60ma)
6AC5GT Sylvania NOS 1940's (39/21)
6B4G Ken Rad branded RCA coated glass NOS 1946 (110ma)
KT66 GEC UK brown base used/70% 1966 (64ma)
