This vintage auto exhaust whistle is a must-have for any car enthusiast. Produced by Pierre Patterson in 1963, this novelty item adds a unique touch to any vehicle. The whistle is unopened and still in its original packaging, making it a rare find for collectors. The whistle is designed to produce a sound similar to that of a police siren, and is sure to turn heads on the road. The item is listed as "new old stock," indicating that it has never been used but has been stored for an extended period of time. Perfect for vintage toy collectors or those looking to add a unique touch to their vehicle, this auto exhaust whistle is a true gem.