One GE 5881 tube. Original 8-mica 3-getter Tung Sol made 5881 tube. Gettering is ugly.Condition: Used, tested on a Hickok 539C. Minimum acceptable for this type is 3300. Test Results: 6000 Please email with any questions. Please see my other auctions and Ebay store. Multiple items will be combined for minimized shipping. International Shipping: Contact for rates, international bidders must assume all liability for shipping. Payment must be received within 14 days of purchase. Thanks and good luck.