(!!!!) (Best Single 1953) 12AY7 GE rebranded Raytheon "GRAY BOX PLATES" NOS "D" getter 1953 (3.2/3.5ma)
(!!!!) (Best Tungsol Single) 6V6GTA Tungsol black plate NOS 1960 era (49.5ma)
(!!!!) (Best Value Pair) 5881 Tungsol used/75% 1957 (54ma and 59ma) (Gm 75%)
(!!!!) (Best Value Single) 6550 Tungsol branded Sylvania smooth gray plate used/tests like new 1960 era (138ma)
(!!!!) (Best Value) JTL-6X4 Tungsol 1950's curved "D" getter low hours/like new reprinted in 1977 (58/40 and 60/40)
(!!!!) (Best Value) JTL-6X4 Tungsol 1950's curved "D" getter low hours/like new reprinted in 1977 (60/40 and 60/40)
(!!!!) (Recommended Pair) 5654=6AK5 RCA Command Series black plate NOS 1964-1966 (9.2ma and 8.3ma) (Same Gm)
(!!!!) (Recommended PAIR) 5998A Sylvania JAN NOS 1980 (144/131ma and 138/144ma) (5998A=7236) (Copy)
(!!!!) (Recommended Pair) 5V4G National Union NOS 1951 same date codes (58-59/40 and 57-58/40 x 2 tubes) 1-3% matched
(!!!!) (Recommended Pair) 5V4G RCA 1950's low hours/like new (60-62/40 and 60-64/40)
(!!!!) (Recommended Pair) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's 1% matched (53-54/40 x 2 tubes)
(!!!!) (Recommended Pair) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's 1-2% matched (52-54/40 and 51-53/40 x 2 tubes)
(!!!!) (Recommended Pair) 717A=JAN-CTL-VT-269 Tungsol NOS 1940's (9.4ma and 8.5ma)
(!!!!) (Recommended Pair) G-27 Majestic Balloon used/good 1930 era (4.7ma and 4.8ma)
(!!!!) (Recommended Single) 6BL7GTA RCA NOS 1966 (30/34ma)
(!!!!) (Recommended Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (91ma and 87ma) (Close Gm)
(!!!!) (Recommended used pair) 5881 Tungsol used/good 1960's (63.2ma and 66ma)
(!!!!) (Single) 6CG7 Tungsol used/good 1960 era black shield between plates (7ma/7ma)
(!!!!) 6336A Tungsol branded Heintz and Kaufman 1960's (62/76ma) ***
(!!!!) 6AK5 GE NOS 1973 (10.2ma)
