(!!!) (Best Value Pair) 866A RCA like new 1956 in white boxes (57-58/40 x 2 tubes)
$ 99.99
1 matched pair) 866A RCA like new 1956 in white boxes - partially smeared printing on both tubes
1 tube) 57/40
1 tube) 58/40
See more: vacuum tube
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 (Best Value Pair) 866A RCA like new 1956 in white boxes (57-58/40 x 2 tubes)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_cbfd7691-492c-4b30-93a2-13238bbabe44.jpg?v=1712794118){kind=link}
 (Best Value Pair) 866A RCA like new 1956 in white boxes (57-58/40 x 2 tubes) "Pin It")