Up For Bidding; 5-RCA 836, 2-HYTRON 3C30, 1-5Z3 Electron Tubes NOS/NIBThese tubes are in excellent condition. I don't know if the tubes that do not have boxes are used. One of the 836 tubes has a US and an anchor on it for the Navy I assume and 1 has an eagle on it. The 2 3C30 tubes both have an anchor and US on it. They both have the same numbers on the bases. The 5Z3 tube also has an eagle on the base. I don't believe that the 3- 836 tubes that don't have boxes have been used. These tubes have not been tested, I have no way of testing them. These came from an old t.v. and radio repair shop shelf that closed several years ago. Payment is expected within 3 days of auction close, I will combine shipping whenever possible, Please check out my other auctions. Thanks For Looking!