This Eimac Y-872 Triode with 5-prong is a vintage piece of electronics made in the United States. It is a high-quality item that is perfect for collectors and enthusiasts of vintage audio and video equipment. The brand Eimac is known for producing exceptional performance and durability, making it a reliable choice for any vintage electronics project. This rectifier tube is suitable for a variety of applications, including consumer electronics and vintage parts and accessories.