You are bidding for 1 piece rare 866a rectifier tube made by Hitachi. Rare tube with large glass. 

Tube was tested on Funke W19 tube tester with perfect result. Guaranteed to be good or refund. Nothing to say more.

 Private selling. I’ll prepare good package and post worldwide, but will not assuming responsibility for tube damage during postage due age and gently specific. Payment should be done within 3 days. Bid accordingly with posted above. 

Contact seller for any questions. Check my other power tube auctions. Happy bidding. Don't loose opportunity.