These used tubes have been tested on a calibrated Hickok 752 or 752A. All tubes are tested for transconductance, internal shorts, defective elements and gas leakage. Based on initial appearance and overall condition I believe these are used tubes. Tested and proven values of transconductance are written on the box in which the tube is sold and shipped. All tubes have been cleaned, pins straightened, wrapped in an internal paper cushion and boxed in new plain, white boxes. Listed price is for a single tube. All tubes are sold with a money back guarantee. Domestic sales: All domestic orders are subject to a minimum shipping charge of $8.00. Please add 50 cents for each additional tube.  Shipping for international orders is higher than for domestic orders, please expect costs to be a bit more. I do charge a $5.00 handling fee for international orders, as these orders must be packaged with extra padding and wrapping to ensure they arrive to you unbroken. (International handling fee does not apply to Canada.)  Thank you so much for looking over my products, and I look forward to doing business with you. Randy Withers