(!!) (Good Value Single) 12AU7 Amperex "Hewlett Packard" Holland "o" getter halo used/good 1968 (8.2/8.4ma)
(!!) 5963 Beckman by RCA gray plates used/test like new 1961 (9.8/10ma) 1-2% section balance
5963 RCA Hewlett Packard gray plates used/good 1960 (8.0/9.2ma)
6X4 GE Hewlett Packard NOS "D" getter halo 1962 (55/40 and 56/40)