Tube is used. Botton has Dimond with 15 in center. Tube was tested on a Hickok 533A. Test results are on sticker on tube. Hickok tube chart has a good working new tube with standard strength at 1250/1250 . Reading higher than the standard will be a stronger than standard new tube. No shorts or leaks. Will combine shipping with other items I have listed on eBay. Will ship worldwide. USPS First Class International shipping can take up to 12 weeks for delivery as posted on USPS website.
