This vintage vacuum tube pair is a great addition to any audio or electronic collection. The 5U4G model was manufactured in the United States and has been tested to ensure its strong performance. The black ribbed plates add a touch of vintage style to any setup.

This item is perfect for those interested in vintage electronics and audio, and would make a great gift for any collector. Its unique features and history make it a valuable addition to any collection. Don't miss out on the opportunity to own a piece of American electronic history.