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(!!) (Best Overall Pair) 5Y4G Sylvania NOS 1951 (57-52/40 and 56-52/40) (rare)
(!!) (Best Overall Pair) 5Y4G Sylvania NOS 1951 (57-52/40 and 56-52/40) (rare)
$ 69.99
1 pair) 5Y4G Sylvania NOS 1951 original boxes
1 tube) 57/40 and 52/40
1 tube) 56/40 and 52/40
(5Y4G/GT=5Y3GT with pin-out scrambled)
- Zenith 5S-250 1938
- Zenith 10S669 1942
- Philco 38-4 radio 1938
- Philco 37-650 1937
- Philco 38-62 1938
See more: vacuum tube
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 (Best Overall Pair) 5Y4G Sylvania NOS 1951 (57-52/40 and 56-52/40) (rare)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_ca060bf9-cff7-48f4-b0ab-ea247e21d14d.jpg?v=1682958119){kind=link}
 (Best Overall Pair) 5Y4G Sylvania NOS 1951 (57-52/40 and 56-52/40) (rare) "Pin It")