(!!!!!) (Best 6072A pair) JG-6072A GE NOS triple mica black plates "O" getter halo 1962 same date codes (2.9/3.1ma and 3.1/3.2ma) (same Gm) (sounds similar to 5 Star GE)
(!!!!!) (Recommended Single) JG-6072 GE NOS triple mica black plates "U" getter halo 1956 (2.6/2.7ma) (mic grade) 1-2% section balance
(!!!) (Recommended Single from 1955) JTL-6X4W Tungsol NOS 1955 curved "D" getter halo (1 in stock) (best sound)