Untested sold as is.  You will recieve 1 of 6 available at random.

The Vintage Vacuum Tube 3CB6 is a rare and sought-after piece for collectors and enthusiasts of vintage electronics. This particular model, known as the 3CB6, is a classic vacuum tube that is perfect for adding a retro touch to vintage audio and video systems. While this item is untested, it holds potential for restoration or display in a vintage electronics collection. Its unique design and historical significance make it a valuable piece for those interested in the nostalgia of bygone technology.