Thank you for viewing. The item for sale is a vintage BOSCH horn. This item was removed and stored from a car I used to own when I was young. BOSCH has already withdrawn from the production of automotive horns, and I believe this is a valuable, discontinued item. (Valuable item) Operation has been confirmed. It produces a very good sound. L: 12V 420Hz H: 12V 510Hz It resonates best when sounded near walls, fences, or other obstructions. I previously listed a new Rally Strada Type R, and I remember comparing it to this item at the time, and they were exactly the same. Therefore, this item is likely also a Rally Strada. For reference, photos 9, 10, and 11 are the Rally Strada Type R that I sold previously. Please compare them for reference. There is no marking on the horn, and I am also a layman, so please understand that my judgment that it is a Rally Strada Type R is only an assumption. I will include the original wiring, but if it is insufficient, please prepare your own wiring for installation. It would be perfect for installation in classic cars, etc. There is a repaired bend in the stay, but it does not affect its use. If you are looking for a BOSCH horn or are interested, please consider it with reference to the photos. Corporate buyers, please refrain from purchasing. I am having trouble with buyers who purchase items in bulk and are slow to provide feedback.