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(!!!!) (Recommended Pair) 5V4G National Union NOS 1951 same date codes (58-59/40 and 57-58/40 x 2 tubes) 1-3% matched
(!!!!) (Recommended Pair) 5V4G National Union NOS 1951 same date codes (58-59/40 and 57-58/40 x 2 tubes) 1-3% matched
By Tube World
$ 89.99
1 pair) 5V4G National Union NOS 1951 same date codes - 1-3% matched
1 tube) 58/40 and 59/40 slightly taller glass - on left
1 tube) 57/40 and 58/40
recommended for:
Fi X
Dr. Z Z-28
Goodsell Super 17
Transporter modded by Modwright
Peter Millett headphone amp using 307A's
Fender Champ 1973
See more: vacuum tube
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 (Recommended Pair) 5V4G National Union NOS 1951 same date codes (58-59/40 and 57-58/40 x 2 tubes) 1-3% matched&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_d80242e1-4ad8-4e3f-91a9-39be4e8b39a6.jpg?v=1707155752){kind=link}
 (Recommended Pair) 5V4G National Union NOS 1951 same date codes (58-59/40 and 57-58/40 x 2 tubes) 1-3% matched "Pin It")