6F8G RCA Radiotron staggered black ribbed plates used/good 1940's (9.0/7.2ma)
6F8G Sylvania Zenith coated glass parallel plates like new 1940's (9.0/8.4ma)
6F8G Tungsol round black plates used/good 1940's (6.0ma and 6.4ma)
6F8G Tungsol round black plates used/very good 1940's (9.4ma and 7.8ma)
6SN7GTA CBS NOS Black Ribbed Plates similar to RCA early 1950's (8.3/8.6ma)
6SN7GTB CBS black base black plates side-getter, the same shape as Sylvania 6SN7GTB used/good 1961 (7.5/8.0ma)
6V6GT GE coin-base NOS 1985 (40.6ma)
6V6GT Hytron black plate like new smeared printing 1947 (44ma)
6V6GT MWT Italy coated glass NOS 1940's (42ma)
6V6GT RCA branded Raytheon used/good 1962 (32.4ma)
6V6GT RCA BROWN BASE - gray coated glass - used 1951 (35ma)
6W4GT CBS NOS 1950's (4 in stock)
80 Hytron engraved base used/strong 1930's (60/40 and 62/40)
JHY-6186=6AG5WA CBS Hytron NOS "D" getter 1959 (8.4ma)