The Stentor iHORN is made from a brass horn which was mounted on a Model T. At one point, it had a mounting bracket which bolted to the firewall indicates that the horn was made between 1914 and 1915. The Stentor horn was connected to a bulb which was inside the cab of the Model T or similar vintage vehicle and was squeezed to emit the horn noise. Stentor was the brand name for Stern & Stern radios and speakers. In 1940, the company was was bought out by Phillips ceasing to manufacture any products under the Stentor name. Stentor horns are highly collectible and valued in the vintage automobile collector market. The Stentor iHorn is part of the industrial revolution. It is historic in the manner in which it contributed to the automotive experience.