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(!!!!) (Best Overall Pair) 6146B Sylvania and Sylvania Amperex NOS 1970's same build (111ma and 116.5ma) (close Gm)
(!!!) (Best Overall Pair) 6JS6C Sylvania Zenith and Sylvania NOS same build (104ma and 107ma)
(!!!) (Best Single) 6KD6 Sylvania double plates NOS 1960's (130ma)
(!!) (Best Pair #2) JAN-6146W Philips by Sylvania NOS 1986 (90ma and 92ma)
(!!) (Best Single) 6JS6C Lindal Japan NOS 1970's (129ma)
(!!) (Best Single) 6JS6C Westinghouse Japan NOS 1970's (121ma)
(!!) (Best Value Pair) 6146W Philips by Sylvania NOS 1986 (80ma and 80ma)
(!!) (Good Value Pair) 6KD6 GE branded Westinghouse NOS 1982 (60ma and 61ma)
(!!) (Good Value Pair) 6KD6 GE branded Westinghouse NOS 1982 (62ma and 65ma)
(!!) (Pair) 6146W GE JAN NOS 1987 (82ma and 84ma)
(!!) (Recommended Pair) 6JS6C GE Realistic and GE NOS 1970's - 1981 (70ma and 76ma)
(!!) (Recommended Pair) JAN-6146W Sylvania NOS 1966 and 1976 (105ma and 98ma)
(!!) 6146B Sylvania branded RTC NOS 1960's (94ma)
(!) (SINGLE) 6JS6C GE NOS 1976 (70ma)
(!) 6JS6C GE branded RCA NOS 1970's (55ma)
(Best Single) 6JS6C Sylvania NOS 1970's (118ma)
12BY7A Motorola by Sylvania NOS 1960's (21ma)
6JS6A RCA NOS 1967 (92ma)
6JS6A Sylvania NOS (114ma)
6JS6B GE branded Zenith NOS (93ma)
