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(!!!) (Best Raytheon Pair #2) CK-5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (36.5/35.0ma and 38.5/35.5ma) 1-3% matched
(!!!) (Best Raytheon Pair #3) CK-5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (35/37ma and 35.5/38ma) 1-3% matched (Highest Gm) (Manley, Modwright, Audio Note)
(!!!) (Best Raytheon Pair #4) CK-5687WB Raytheon black plates NOS 1970's (Audio Note, Manley, Modwright) (31/32ma and 32/31ma) 1-3% matched
(!!!) (Best Single #1 1943) 6X5GT=VT-126B RCA black plates NOS 1943 (59/40 and 62/40) (Best Sound)
(!!!) (Best Single #2) 6X5GT=VT-126B RCA black plates NOS 1943 (52/40 and 56/40) (Best Sound)
(!!!) (Best Single) CK5687WA Raytheon black plates "O" getter like new 1960 (35/38ma)
(!!!) (BEST SINGLE) ECL82 Philips Miniwatt Holland NOS 1960 (2.1ma and 27ma)
(!!!) (BEST VALUE SINGLE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's slightly tilted glass (52/40 and 54/40)
(!!!) (BEST VALUE SINGLE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's slightly tilted glass (54/40 and 54/40)
(!!!) (Best Value Single) ECL82=6BM8 Pope Holland NOS 1969 made in Hendon Works Australia plant (2.0/28ma)
(!!!) (Best Value Single) ECL82=6BM8 Siemens made in Bharat Electronics India Philips plant NOS 1974 (2.1/37ma)
(!!!) (Best Value) 6X5GT=VT-126B RCA black plates NOS 1943 (48/40 and 48/40) (Best Sound)
(!!!) (Best Value) 6X5GT=VT-126B RCA black plates NOS 1943-1945 era (53/40 and 60/40)
(!!!) (Mullard Pair) 6BM8=ECL82 RTC by Mullard UK NOS 1975 (2.2/34ma and 2.0/38ma)
(!!!) (Mullard Pair) ECL82=6BM8 RTC England by Mullard UK NOS 1974-1977 (2.1/30ma and 2.1/29ma) 1-3% matched
(!!!) (Recommended Single) JTL-6X4WA Tungsol NOS 1965 tests like new (64/40 and 66/40) (Highest testing single)
(!!!) (Set of 74) 6X4 US Brands NOS original boxes 1950-1980 era (set of 74)
(!!!) (Single 1943) 6X5GT=VT-126B RCA black plates NOS 1943 (51/40 and 54/40) (Best Sound)
(!!!) (Single 1943) 6X5GT=VT-126B RCA black plates NOS 1943 slightly tilted glass (54/40 and 58/40) (Best Sound)
(!!!) (Single) CK-5687 Raytheon black plates "O" getter like new 1960 (30/33.5ma)