6AU5GT RCA black plates NOS 1950's (1 pair: 54ma and 53ma)
$ 14.88
1 pair) 6AU5GT RCA black plates NOS 1950's same build
1 tube) 53ma Gm=4900 (RCA)
1 tube) 54ma Gm=5000 (RCA branded Sylvania)
- Dehavilland 845 amp
See more: vacuum tube
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