Vacuum Tubes (2) RCA 5751's Tested $35.00 USD Sold on: 2014-Nov-22 Marketplace: eBay 2 Treasure 0 Trash 100% Detail: Up for auction are two RCA 5751 black plate, triple mica vacuum tubes in very nice condition. Both tubes were tested on a Hickok 547 tube tester where 1500 micromhos is mutual conductance and 900 is a... More Relevance Historical Items
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