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(!!!) (Best Value Pair) 12A Sylvania NOS and Philco like new 1930's - 1940's same build (6.7ma and 6.8ma)

(!!!) (Best Value Pair) 12A Sylvania NOS and Philco like new 1930's - 1940's same build (6.7ma and 6.8ma)

$ 64.99

1 pair) 12A Sylvania NOS and Philco like new 1930's - 1940's same build

1 tube) 6.8ma Gm=1600 Sylvania NOS 

1 tube) 6.7ma Gm=1500 Sylvania Philco like new 

 

Vplate = 180V

Vgrid = -13.5V

Good used Ma = 5.5 - 7ma

Good used Gm = 1400-1600

 

- RCA Radiola 16 from 1928

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