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(!!!!) (BEST PAIR #2) 6C4WA GE JAN NOS 1980-1982 (8.4/8.4ma) 1% matched
(!!!!) (BEST PAIR #3) 6C4WA GE JAN NOS 1980-1981 (8.6/9.0ma) (Same Gm)
(!!!!) (BEST PAIR) 6C4WA GE JAN NOS 1973-1980 (8.4/8.2ma)
(!!!!) (Best Value Pair) 6C4WA Philips JAN by Sylvania NOS 1987 (7.4ma and 7.2ma)
(!!!!) (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 (8.8ma and 9.2ma) (same Gm)
(!!!!) 807 RCA black plate ceramic base NOS 1940's with data sheet (72.5ma) (1st series made) (rare)
(!!!) (Best Single) JAN-6C4WA Philips by Sylvania NOS 1987 (10.2ma)
(!!!) (Single) JAN-6C4WA GE NOS 1972 (8.8ma)
(BEST PRICE) 8156 GE NOS (4 tubes for $24.99)
12BY7A Motorola by Sylvania NOS 1960's (21ma)
6100=6C4WA GE 5 star triple mica NOS 1959-1960 (12.6ma) (Premium 6C4)
6C4WA Sylvania NOS 1965 and 1971 (read review)
807 Sylvania tests like new no printing 1940's (81ma)
8156 GE NOS (1 pair)
8156 GE NOS (30 in stock)
