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(!!!!) (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)
(!!!!) (Best Pair 1955) CV378=GZ37 Mullard UK "D" getter NOS 1955 no printing (56-56/40 and 57-57/40)
(!!!!) (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 6L6GB) 6L6GB RCA and RCA branded Tungsol black plate double "D" getters low hours/like new 1950's (78.5ma and 80ma) (rare)
(!!!!) (Best Pair) 1L6 Sylvania NOS 1950 same date codes (20/16 and 19/16)
(!!!!) (BEST PAIR) 408A Western Electric NOS "D" getter 1970 (85/60 and 86/60)
(!!!!) (BEST PAIR) 408A Western Electric NOS 1976 and 1982 (86/60 and 88/60)
(!!!!) (Best Pair) 5842Q Raytheon NOS 1983 (27ma and 29.5ma)
(!!!!) (Best Pair) 5842Q Raytheon NOS 1983 (35ma and 37ma)
(!!!!) (Best Pair) 6BQ7A RCA black plates NOS 1967 same date codes (15/14.5ma and 13.5/16.5ma)
(!!!!) (BEST Pair) 6CW4 GE NOS 1966-1970 (117/60 and 118/60) (strong emission)
(!!!!) (BEST Pair) 6CW4 GE NOS 1975-1976 (120/60 and 120/60) (strong emission)
(!!!!) (BEST PAIR) 6DN7 GE branded GE and CBS NOS 1959 same build (46.4/46.5ma and 8/9ma)
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950 (1.0ma and 1.0ma) 1-2% matched **
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950-1953 (1.0ma and 1.0ma) 1% matched **
(!!!!) (Best Pair) 7189 Sylvania black plates NOS 1970 era (42ma and 46ma)
(!!!!) (BEST PAIR) 7C5 Sylvania branded International NOS 1960's (39ma and 40ma) (LOKTAL BASE 6V6GT)
(!!!!) (Best Pair) CEA-5993 Bendix NOS 1950's (52/40 x 4 sections)
(!!!!) (Best Pair) CV4004=12AX7 Mullard box plates NOS 1981 (0.9/1.2ma and 0.9/1.1ma)
