(!!!) (Recommended Pair) 6KG6A Westinghouse JAPAN NOS original boxes 1973 (109ma and 110ma)
(!!!) (Recommended Pair) 6KG6A Westinghouse JAPAN NOS original boxes 1973 (140ma and 144.5ma)
(!!!) (Recommended Pair) 6KG6A Westinghouse JAPAN NOS original boxes 1973 (98ma and 99ma)
(!!!) (Recommended Single) 6KG6A RCA JAPAN NOS original boxes 1970's (142ma)
(!!!) (Recommended Single) 6KG6A Westinghouse JAPAN NOS 1973 (116ma)
(!!!) (~ Recommended Pair ~) 6KG6A RCA JAPAN NOS original boxes 1970's (106ma and 110ma)
(!!!) (~ Recommended Pair ~) 6KG6A RCA JAPAN NOS original boxes 1970's (111ma and 114ma)
(Recommended Pair) 6KG6A=EL509=EL519 Sylvania made by EI-Yugoslavia NOS (143ma and 149ma)