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(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40)
(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40)
By Tube World
$ 79.99
1 pair) 5Z3G RCA NOS 1957 same date codes in gold colored boxes - slightly tilted glass
1 tube) 56/40 and 59/40
1 tube) 57/40 and 60/40
5Z3=5U4G with UX-4 pin base (same specs)
- Korneff 45 SET
- Emotive Audio SIRA
See more: vacuum tube
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 (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_9994f2f7-32d4-4cee-bf4c-415f97447bb9.jpg?v=1677196839){kind=link}
 (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40) "Pin It")