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(!!!!) (Best Pair #2) 5881 Tungsol NOS 1954 original boxes (68.5ma and 69.2ma)
(!!!!) (Best Pair #2) 5881 Tungsol NOS 1954 original boxes (68ma and 69.5ma)
(!!!!) (Best Pair #2) 5U4GB RCA Super Airline and RCA NOS 1960's (58-60/40 and 59-60/40) 1-2% matched
(!!!!) (Best Pair #2) 6201=12AT7=E81CC Philips SQ by Mullard UK gold pins NOS 1974 (12.8/11.2ma and 13.8/11.5ma) (closely matched)
(!!!!) (Best Pair #2) 6AC7 GE NOS 1980-1982 (10ma/11.2ma)
(!!!!) (Best Pair #2) 6AQ5A GE NOS 1974-1981 (50ma and 52ma)
(!!!!) (Best Pair #2) 6J5GT Ken Rad black round plates NOS 1942 (10.6ma and 10.8ma) 1-3% matched
(!!!!) (Best Pair #2) 6LQ6=6JE6C Raytheon Japan NOS 1970's (105ma and 108ma)
(!!!!) (Best Pair #2) EC92=6AB4 Siemens Halske NOS branded Philips 1967 (9ma and 9ma)
(!!!!) (Best Pair #2) JAN-5755 Raytheon Black Plates NOS 1973 (1.6/1.7ma and 1.7/1.8ma) (High Gm)
(!!!!) (Best Pair #3) 5670W GE NOS 1986 (7.8/8.8ma and 7.6/8.2ma) 1-5% matched
(!!!!) (Best Pair #3) 6201=12AT7=E81CC Philips SQ by Mullard UK gold pins NOS 1974 (10.2/8.8ma and 10.6/9.2ma) (closely matched)
(!!!!) (BEST Pair #3) 6CW4 GE NOS 1974-1978 (105/60 and 107/60) (strong emission)
(!!!!) (Best Pair #3) 6J5GT Ken Rad black round plates NOS 1942 (12.4ma and 11.6ma) (Same Gm)
(!!!!) (Best Pair #3) JAN-5842WA Raytheon NOS 1984-1985 (20.6ma and 20.8ma) 1-3% matched
(!!!!) (Best Pair #4) 6AC7 GE NOS 1979-1982 (8ma/7.8ma)
(!!!!) (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)
(!!!!) (Best Pair 1960) 12AX7 GE tall gray ribbed plates "U" getter like new 1960 (1.2/1.2ma and 1.3/1.2ma) 1-3% matched
(!!!!) (Best Pair 1963) 5U4GB GE NOS 1963 same date codes (60-62/40 and 60-60/40 x 2 tubes)
(!!!!) (Best Pair 1966) CV378=GZ37 Mullard NOS 1966 (52-52/40 x 2 tubes) 1% matched
