(!!!!!) (Good Value Pair) 12BH7A Sylvania gray pinched plates NOS and used 1970 era (7.6/8.0.4ma and 7/7ma)
(!!!!!) (Recommended Pair 1960-1965) 12BH7A Sylvania gray oval plates NOS "O" getter (11.5/10ma and 10.5/10ma) (Art Audio, Quicksilver, Octave)
(!!!!) (3rd Best Pair) 27 Philco by Sylvania NOS 1940's (5.9ma and 5.9ma) 1% matched
(!!!!) (3rd Best Pair) 27 Philco by Sylvania NOS 1940's (6.0ma and 6.1ma) 1-2% matched
(!!!!) (Best Overall Pair) 27 Philco by Sylvania NOS 1940's (6.7ma and 6.7ma) 1% matched
(!!!!) (Best Pair) 27 Philco by Sylvania NOS 1940's (6.3ma and 6.3ma) 1% matched
(!!!!) (Best Single) 12BH7A GE ribbed plates NOS 1980 (10.0/10.2ma) 1-3% section balance
(!!!!) (Best Single) 12BH7A Sylvania rebranded GE black oval plates "U" getter NOS 1956 era (11.2/14ma)
(!!!!) (Recommended Pair) 27 Philco by Sylvania NOS 1940's (5.5ma and 5.3ma)
(!!!!) (Recommended Pair) 27 Philco by Sylvania NOS 1940's (5.7ma and 5.5ma)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (10.2/10.6ma)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (9/9ma)
(!!!!) 12BH7A Sylvania pinched plates NOS 1966 (10.5/15.4ma)
(!!!) (Best Overall UV-99) C-299=UV-99 Cunningham NOS 1920's with tube data sheet (3.4ma) (highest Ma) (UV have small pins)
(!!!) (BEST PAIR) 7AF7 Sylvania NOS gray round plates NOS 1950-1958 (8.5/8.7ma and 9.2/9.2ma) 1-5% matched (same Gm)
(!!!) (Best Pair) 99=X99 Ken Rad NOS 1940's (2.5ma and 2.6ma)
(!!!) (Best Single) CX-299 Cunningham engraved base NOS 1920's (2.9ma) (X-99=UX-199=CX-299)
(!!!) (Best Value Pair) 6B4G Sylvania NOS 1952 same build (76ma and 80ma)
(!!!) (PAIR) 6DN7 Philco and Tungsol by GE NOS 1960's (33ma/9.2ma and 38ma/7.5ma)
(!!!) (Recommended Single) 12AX7A Sylvania NOS 1970's (Gm=2500/2800 and 2.2/2.7ma)