This is a vintage Cunningham RCA 22 vacuum tube that comes in its original box, making it an excellent addition to any display collection. The brand of this tube is Zenith and it falls under the categories of vintage tubes and tube sockets, vintage parts and accessories, vintage audio and video, vintage electronics, and consumer electronics. This tube is a rare find and would make a great conversation starter for anyone who appreciates vintage electronics. It is in excellent condition and has never been used, making it a valuable item for collectors. Its unique design and brand make it a must-have for vintage technology enthusiasts.