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(!!!!) (1 Pair) 5654=6AK5 Raytheon Toshiba Japan NOS 1970's (6.9ma and 7.3ma)
(!!!!) (1 Pair) 5654=6AK5 Raytheon Toshiba Japan NOS 1970's (7.2ma and 7.3ma) (same Gm)
(!!!) (Recommended Pair) JTL-5654=6AK5W Tungsol gray plate "D" getter used/good 1956-1958 (6.4ma and 6.5ma)