The product is a pair of vintage Sylvania JAN-CHS 6SN7W vacuum tubes, packaged in their original box, with testing results from. These tubes are Navy Ancor branded from 1958 and are made in the United States. Known for their high-quality construction and performance, Sylvania vacuum tubes were commonly used in vintage audio and video equipment, making them a coveted item for collectors and enthusiasts of vintage electronics. New old stock