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(!!) (Recommended Pair) 30 Sylvania like new - same plates - different shape top mica (2.7ma and 2.9ma)

(!!) (Recommended Pair) 30 Sylvania like new - same plates - different shape top mica (2.7ma and 2.9ma)

By Tube World

$ 29.99
1 pair) 30 Sylvania used/very good - same plates - different shape top mica
1 tube) 2.9ma Gm=800 (Sylvania 1940's)
1 tube) 2.7ma Gm=800 (Sylvania branded Philco 1946)
See more: vacuum tube
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