50L6GT x2 (pair) NOS/NIB RCA smoked glass power output power tubes used in early All American Five applications in the 1940's and early 1950's, some early FM applications, some shortwave receivers and some guitar amps.1950's vintage and tested for new performance. Early 1950's vintage. If you prefer a tested used pair, please check my other listings. I will properly pack the tubes for safe shipment and pay USPS postage with tracking number in the US. Same business day shipping. International shipping through US Postal Service International at actual postage cost and actual selling price on customs forms. 7 ounces packed weight for international shipping.