(!!!) (Best Pair #2) 6146B RCA NOS 1968-1971 (93ma and 96.6ma)
(!!!) (PAIR) 6146B RCA NOS 1971-1973 (83ma and 87ma)
(!!) (Pair) 6146W GE JAN NOS 1987 (82ma and 84ma)
(!!) 6146B Sylvania branded RTC NOS 1960's (94ma)
(!!) 6146W Sylvania NOS 1970's (105ma)