This vintage SPARTON 401 radio tube is a rare find for collectors and enthusiasts. The NOS NIB box may have some wear and tear, but the tube itself is in excellent working condition. Made in the United States, this detector amplifier tube is perfect for vintage audio projects or to add to a collection of vintage electronics. The SPARTON brand is known for its high-quality products and this tube is no exception. Don't miss out on the opportunity to own this unique piece of history.