(Recommended Pair) 12X4 RCA "D" getter NOS 1958-1960 era (48-49/40 and 47-48/40)
$ 23.99
1 pair) 12X4 RCA "D" getter NOS 1960
1 tube) 48/40 and 49/40
1 tube) 47/40 and 48/40
- Dynaco PAS-2, PAS-3
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See more: vacuum tube