75 ST Sylvania twin diode-triode vacuum tube used in hundreds of radios of the 30's and 40's. New ones are getting scarce. The tubes have been tested for new performance and are factory fresh. Sylvania box styles may vary from the picture. I will properly pack the tube for safe shipment and pay USPS postage with tracking number in the US. Same business day shipping.  International shipments through US Postal Service International for actual postage cost and selling price on customs forms. 7 ounces packed weight for international.