(!!!!!) (Recommended Single) 421A Western Electric NOS 1969 (85ma and 75ma)
(!!!!!) (Recommended Single) 421A=5998 Western Electric NOS 1984 (81ma and 94ma)
(!!!!) (2nd Best Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (88ma and 101ma)
(!!!!) (2nd Best Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (91ma and 103ma)
(!!!!) (Best Overall Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (124ma and 119ma) (Close Gm)
(!!!!) (Recommended Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (91ma and 87ma) (Close Gm)