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5BK7A GE branded GM Delco black plates

5BK7A GE branded GM Delco black plates "U" getter 1950's (12/13ma)

$ 6.99

5BK7A GE branded GM Delco black plates "U" getter 1950's

12ma Gm=6600

13ma Gm=7300

 

 

sub for a 6BK7 or 6BQ7

 

dual-triode

See more: vacuum tube
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