(!!!!) (Recommended GE Pair) 5U4GB GE NOS 1966 (56-59/40 and 56-58/40)
By Tube World
$ 59.99
1 pair) 5U4GB GE NOS "D" getters 1966 (FV)
1 tube) 56/40 and 59/40
1 tube) 56/40 and 58/40
See more: vacuum tube
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 (Recommended GE Pair) 5U4GB GE NOS 1966 (56-59/40 and 56-58/40)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_9060dfaa-2341-4bdb-bd62-54cd4a9e83a6.jpg?v=1669080961){kind=link}
 (Recommended GE Pair) 5U4GB GE NOS 1966 (56-59/40 and 56-58/40) "Pin It")