Rare vintage 1950's Point-contact transistors, Western Electric A1729, $188.50 USD Sold on: 2014-May-12 Marketplace: eBay 5 Treasure 0 Trash 100% Detail: OFFERING four (4) Type A1729 Point-contact transistors . (Any point contact type of transistor is collectible, identified because there is a small hole on the unit to allow for manual adjustment of th... More Relevance Historical Items
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