(!!!) (PAIR) 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)
(!!) 12BY7 Sylvania coated glass NOS 1953 faded printing (21.5ma)
(!!) 6146B Sylvania branded RTC NOS 1960's (94ma)
(!!) 6146W Sylvania NOS 1970's (105ma)
12BV7=12BY7A Tungsol NOS 1960 era (35ma)
12BY7A GE Motorola NOS 1973 (21ma)
12BY7A GE NOS "U" getter 1961 era (25ma)
12BY7A Motorola by Sylvania NOS 1960's (21ma)
12BY7A RCA NOS 1966 (20ma)
12BY7A RCA used/good 1960's (21ma)
12BY7A RCA used/good 1960's (23ma)
12BY7A Sylvania branded RCA NOS (20ma)
