(!!!) (Best Pair) 6663=6AL5 Tungsol NOS 1950's (48-48/40 and 48-49/40)
$ 12.99
1 pair) 6663=6AL5 Tungsol NOS 1950's
1 tube) 48/40 and 48/40
1 tube) 48/40 and 49/40
6663=mobile-rated
See more: vacuum tube
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