April 24, 2024
Vintage Sylvania 6L6 GB - Black Plates - Test NOS
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This auction is for one Sylvania 6L6GB tube, made in the USA . Black plates, O getter, copper grid posts. Date code of week 35 of 1957. Short bottle, 3 1/2" tall installed. It tests like new on a Jackson 648S at 130. 70 = minimum good, 130 = maximum. Combined shipping is available.
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