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(!!!!) (Best Single) 12BH7A Sylvania Silvertone gray oval plates large "D" getter halo 1950's NOS (13.6/12.4ma)
(!!!!) (BEST SINGLE) 201-A Silvertone Balloon NOS 1930 era (3.8ma and Gm=750)
(!!!!) (Best Single) 5842=417A Amperex "PQ" Holland "D" getter Gold Pins NOS 1956-1959 (35ma)
(!!!!) (Best Single) 5965A GE NOS 1976 (16.8/17.0ma) 1-2% section balance
(!!!!) (BEST SINGLE) 5U4GB Raytheon "O" getter NOS 1962 (58/40 and 60/40)
(!!!!) (Best Single) 5V4G Ken Rad black plates NOS 1945 (60/40 and 60/40)
(!!!!) (Best Single) 6146B GE NOS 1980 (121ma)
(!!!!) (BEST SINGLE) 6201=12AT7WC GE "5 STAR" NOS double mica, copper grid posts, gray plates, 1972 (9.8/10.5ma)
(!!!!) (Best Single) 6550 Tungsol branded RCA NOS vented plate NOS 1965 (130ma) (Recommended for Audio Research Ref power supply)
(!!!!) (Best Single) 6DJ8=ECC88 Sylvania JAN NOS 1974 (17.0/17.5ma) 1-3% section balance
(!!!!) (Best Single) 6L6GC RCA black plate NOS 1962 (88ma)
(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (9.3/11ma)
(!!!!) (Best Single) 6SN7GTB RCA branded GE NOS 1970 (9.0/9.2ma)
(!!!!) (Best Single) 7025 RCA gray pinched plates tests like new 1961 (Gm=1600/1700 and 1.2/1.3mA) (recommended for V1 guitar amp)
(!!!!) (Best Single) 8068 GE NOS 1983 slightly tilted glass (47.5ma)
(!!!!) (Best Single) 83 RCA Radiotron NOS 1940's (60-59/40)
(!!!!) (Best Single) CRP-6CG7 Raytheon black plates and black electrostatic shield and "O" getter halo 1962 (8.0/8.8ma)
(!!!!) (Best Single) CX-345 Cunningham Balloon used/tests like new 1930 era (41ma)
(!!!!) (Best Single) E88CC=6922 Telefunken Germany <> bottom NOS 1962 (16.4/17.5ma) (mic grade)
(!!!!) (Best Single) ECC32=CV181 Mullard branded Philips Miniwatt brown base/black plates "D" getter halo mid-1950's (6.2/6.4ma) 1-2% section balance
