(!!!!) (1 Pair) 27 Philco by Sylvania NOS 1940's (6.0ma and 6.2ma)
(!!!!) (Best Pair) 27 Philco by Sylvania NOS 1940's (6.2ma and 6.2ma)
(!!!!) (Best Pair) 27 Philco by Sylvania NOS 1940's (6.5ma and 6.6ma)
(!!!!) (Recommended Pair) G-27 Majestic Balloon used/good 1930 era (4.7ma and 4.8ma)