(!!!) 6KD6 Sylvania double plates NOS 1960's (98ma)
(!!) (Good Value Pair) 6KD6 GE branded Westinghouse NOS 1982 (60ma and 61ma)
(!!) (Good Value Pair) 6KD6 GE branded Westinghouse NOS 1982 (62ma and 65ma)
6KD6 GE branded Dumont NOS (83ma)
6KD6 GE NOS (83ma)
6KD6 Sylvania branded RCA NOS 1970's (87ma)
6KD6 Sylvania NOS (102ma)
6KD6 Sylvania NOS (112ma) (Yaesu)
