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(!!!!) (Best Overall Pair) 6146B Sylvania and Sylvania Amperex NOS 1970's same build (111ma and 116.5ma) (close Gm)
(!!) (Best Pair #2) JAN-6146W Philips by Sylvania NOS 1986 (90ma and 92ma)
(!!) (Best Value Pair) 6146W Philips by Sylvania NOS 1986 (80ma and 80ma)
(!!) (Pair) 6146W GE JAN NOS 1987 (82ma and 84ma)
(!!) (Recommended Pair) JAN-6146W Sylvania NOS 1966 and 1976 (105ma and 98ma)
(!!) 6146B Sylvania branded RTC NOS 1960's (94ma)