(!!!) (Single) 6688=E180F Amperex PQ USA NOS "O" getter 1968 (9ma)
(!!) (Single) 6688=E180F Telefunken Germany <> bottom NOS gold pins 1968 (9ma)
6100=6C4WA GE 5 star triple mica NOS 1959-1960 (12.6ma) (Premium 6C4)
6688=E180F National UK black plate NOS probably made by Amperex (9ma)
6688=E180F National UK gray plate NOS probably made by Amperex (16ma)
6C4WA Sylvania NOS 1965 and 1971 (read review)
