(Best) 1U4 Tungsol NOS 1953 (1 in stock)
$ 6.49
Sorry, this product is sold out!
2) JTL-1U4 Tungsol NOS 1953
similar to 1L4
See more: vacuum tube
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 1U4 Tungsol NOS 1953 (1 in stock)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_303fc4a2-fac6-4d11-9a7b-db18e77f9259.jpg?v=1630949271){kind=link}
 1U4 Tungsol NOS 1953 (1 in stock) "Pin It")
2) JTL-1U4 Tungsol NOS 1953
similar to 1L4