These are original NOS 12 Volt Sparton SOS Fog Horns. These horns are obviously used on Boats and other Marine craft, but would also make a great accessory for a Rat Rod. The item "Antique Vintage 12 Volt Sparton SOS Boat Fog Horn Car Truck Rat Rod NOS" is in sale since Thursday, April 25, 2019. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Other Parts". The seller is "56surplus" and is located in Riverhead, New York.This item can be shipped worldwide.