(!!!) (Best Pair) 6GK5=6FQ5A Matsushita Japan rebranded Raytheon NOS (12/13ma)
(!!!) (Good Value Pair) 6GK5=6FQ5A Sylvania rebranded Raytheon NOS (8ma and 8ma)
(!!!) (Recommended Pair) 6GK5=6FQ5A Sylvania rebranded Raytheon NOS (8.2ma and 8.3ma)
(!!!) (Recommended Pair) 6GK5=6FQ5A Toshiba Japan rebranded Raytheon NOS (8.7ma and 9.7ma)
(!!) (Best Pair) 6GK5=6FQ5A Hitachi Japan rebranded Raytheon and GE NOS 1970 era (9.6/10ma)
(!!) (Recommended Pair) 6GK5=6FQ5A GE NOS 1968-1981 (10.4ma and 11.2ma)
(!!) (Recommended Pair) 6GK5=6FQ5A Hitachi Japan rebranded Raytheon NOS (8.5/8.6ma)
6GK5=6FQ5A RCA NOS 1960's (13.6ma)
6GK5=6FQ5A Super Radiotron Australia NOS 1960's (9ma)
6GK5=6FQ5A Sylvania branded Raytheon NOS (11.4ma)
6GK5=6FQ5A Sylvania branded Raytheon NOS (12.5ma)
6GK5=6FQ5A Sylvania branded Raytheon NOS (13ma)
6GK5=6FQ5A Sylvania branded Raytheon NOS (15.2ma)
