From a grouping of vintage boat parts I found at an estate sale. This has not been tested (Since I don't know how). Horn measures 5" wide and about 7" tall. //in excellent condition with no scrathes or pitting in the metal.
The item "Vintage Spartan 12 volt boat horn. Mint Deadstock, never installed Circa 1958" is in sale since Thursday, July 14, 2016. This item is in the category "eBay Motors\Parts & Accessories\Boat Parts\Electrical & Lighting".The seller is "acrosstheboard" and is located in Madison, Wisconsin. This item can be shipped worldwide.