Vintage Champion Spark Plug Radio Display UNTESTED Made In Japan. Sold as is due to being untested. Great automotive display piece. The Vintage Champion Spark Plug Radio Display is a rare and collectible piece of vintage electronics. Made in Japan by Champion Spark Plugs, this radio display features a unique design and brand logo that adds to its appeal. Although untested, it holds the potential to be a valuable addition to any vintage audio and video collection, particularly for those interested in unique and rare pieces from the past.