(!!!) (BEST OVERALL PAIR) 6KD6 GE branded RCA NOS 1970's (98ma and 99ma) 1-2% matched
(!!!) (Recommended Pair) 6KD6 GE NOS 1970's (85ma and 87ma)
(!!!) 6KD6 Sylvania double plates NOS 1960's (98ma)
(!!) (Recommended Pair) 6KD6 GE branded RCA NOS same date codes 1977 (75ma and 80ma)
(!!) (Recommended Pair) 6KD6 GE NOS 1970's same build (73ma and 74ma)
(!!) (Recommended Pair) 6KD6 Sylvania NOS same build (105ma and 106ma)
(!!) (Recommended Pair) 6KD6 Sylvania NOS same build (97ma and 102ma)
