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(!!!!) (Best Value Pair) 6C4WA Philips JAN by Sylvania NOS 1987 (8.8ma and 9.2ma) (same Gm)
(!!!!) (Pair) 6C4WA GE JAN NOS 1971-1973 (8.2/8.4ma) 1-2% matched (Conrad Johnson)
6C4WA Sylvania NOS 1965 and 1971 (read review)
6100=6C4WA GE 5 star triple mica NOS 1959-1960 (12.6ma) (Premium 6C4)
(!!!) (Best Single) JAN-6C4WA Philips by Sylvania NOS 1987 (10.2ma)
(!!!) (Single) 6100=CV4058=6C4 Mullard box plate NOS 1973 (9ma)
(!!!!) (BEST PAIR #2) 6C4WA GE JAN NOS 1980-1982 (8.4/8.4ma) 1% matched
(!!!!) (BEST PAIR) 6C4WA GE JAN NOS 1973-1980 (8.4/8.2ma)
(!!!!) (BEST PAIR #1) 6C4WA GE JAN NOS 1980-1984 (9.8/10ma)
(!!!!) (BEST PAIR #3) 6C4WA GE JAN NOS 1980-1981 (8.6/9.0ma) (Same Gm)
(!!!!) (Best Value Pair) 6C4WA Philips JAN by Sylvania NOS 1987 (8.2ma and 7.6ma)
(!!!!) (Best Value Pair) 6C4WA Philips JAN by Sylvania NOS 1987 (7.4ma and 7.2ma)
(!!!) (Single) JAN-6C4WA GE NOS 1972 (8.8ma)
