3 GE 5670 vacuum tubes test really strong $9.99 USD Sold on: 2014-Dec-26 Marketplace: eBay 1 Treasure 0 Trash 100% Detail: 3 GE 5670 vacuum tubes test really strongThey all have 2 mica insulators and black plates.They all have 50's date codes. I got these tubes from an engineering friend. He was very picky about marking t... More Relevance Historical Items
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