2A3 NOS/NIB Sylvania power output triode tube. 1950's vintage. The tube tests at 4300 microMhos. The bogey number is 2600. I will properly pack the tube for safe shipment and pay USPS insured 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. 11 ounces packed weight for international.