(!!!) (Best Pair) 6663=6AL5 Tungsol NOS 1950's (48-48/40 and 48-49/40)
$ 11.99
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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 (Best Pair) 6663=6AL5 Tungsol NOS 1950's (48-48/40 and 48-49/40)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_d6dab2ea-73ae-4f85-8df9-2dfe01c499b1.jpg?v=1730350391){kind=link}
 (Best Pair) 6663=6AL5 Tungsol NOS 1950's (48-48/40 and 48-49/40) "Pin It")