(!!!!) (Good Value Single) 6SN7GTA GE "U" getter halo used/good 1954 (6.0/6.4ma)
(!!!) 6SN7GT Raytheon parallel plates NOS 1953 (8.5/10ma)
(!!) 6SN7GT Raytheon taller bottle parallel black plates NOS 1949 (8.2/8.0ma)