This vintage electron tube made by RCA is a great addition to any collection of vintage electronics. With 7 pins, it can be used for a variety of purposes including vacuum amplifiers, ham radios, transmitters, and even TVs. The high-quality construction and superior materials used in the production of this tube ensure that it will function optimally for a long time to come. Made in the United States, this tube is a great choice for those who value American-made products. The RCA brand is known for its reliability and superior quality, and this tube is no exception. Get yours today!