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(!!) (#1 6HM5 Japan Pair) 6HA5=6HM5 Hitachi Japan branded RCA NOS 1970's (14.5ma and 15ma) (Highest Ma and Gm)
(!!) (#2 6HM5 Japan Pair) 6HA5=6HM5 Hitachi Japan branded RCA NOS 1970's (12ma and 13ma)
(!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (17ma and 18ma) (Highest mA and Gm)
6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (6 in stock)
(!!!) (Best Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (12.0ma and 12.8ma)
(!!!) (Recommended Pair) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971-1972 (10.4ma and 10.6ma)
