April 1, 2024
Sylvania 6SN7 GTB closely matched quad 6H8C (4 tubes)
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Sylvania 6SN7 GTB: The earliest Sylvania GTA types have a green label and heavy top getter flashing extending down the sides of the tube. The early GTB types are similar, but most have a yellow or red label, with some rare first production run tubes still out there with the 1940s green label. These are all a great bargain now, and are sure to be rare and expensive tomorrow. Sylvania 6SN7 GTA closely matched quad, Test Very Strong!! "Made In USA" 1940's production, Rare and collectable, supplied in boxes! Chrome tops, Shiny Black parallel ribbed plates, all made by Sylvania All tubes are in perfect condition . Tested Info link /6sn7.htm https:///6sn7.htm Forum info http://avclub.gr/forum/archive/index.php/t-4376.html Price comparison link /6sn7.html
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