(!!!!) (Best Single 1953) 12AY7 GE rebranded Raytheon "GRAY BOX PLATES" NOS "D" getter 1953 (3.2/3.5ma)
(!!!) (Best GE 1954) 12AY7 GE branded RCA gray plates "D" getter NOS 1954 (2.3/2.9ma)
(!!!) (Recommended Single) 12AY7 Tungsol tall gray ribbed plates rebranded Raytheon NOS "D" getter 1950's (3.3/4.0ma)
(!!) (Recommended Single) 12AY7 GE NOS "O" getter NOS 1964 (2.2/2.7ma)
(!!) 12AY7 GE branded Marconi "D" getter used/good 1950's (2.3/2.4ma)
(!!) (BEST VALUE) 12AY7 GE branded Raytheon NOS "O" getter 1960's (2.6/2.3ma)
(!!!) (Recommended Single) 12AY7 GE NOS 1977 (2.2/2.0ma)