(!) 5U4G Sylvania rebranded Zenith used/good 1950 (54/40 and 56/40)
$ 69.99
5U4G Sylvania rebranded Zenith used/good 1950 in WB
54/40
56/40
See more: vacuum tube
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 5U4G Sylvania rebranded Zenith used/good 1950 (54/40 and 56/40)&Category=vacuum tube&ImageURL=http://cdn.shopify.com/s/files/1/0333/7633/products/1_4223714b-433c-4aff-a5fa-abbf5e03dbd1.jpg?v=1671687011){kind=link}
 5U4G Sylvania rebranded Zenith used/good 1950 (54/40 and 56/40) "Pin It")