(!!!) (Best Pair) 866A RCA NOS 1968 original boxes (63-64/40 x 2 tubes)
$ 149.99
1 matched pair) 866A RCA NOS original boxes 1968
1 tube) 63/40
1 tube) 64/40
See more: vacuum tube
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 (Best Pair) 866A RCA NOS 1968 original boxes (63-64/40 x 2 tubes)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/7_bdf78d41-1d4d-4f9f-bfaf-b78b2fa18b2a.jpg?v=1781539323){kind=link}
 (Best Pair) 866A RCA NOS 1968 original boxes (63-64/40 x 2 tubes) "Pin It")