Vintage industrial machine-age electric horn, hot rod

Old mid-century vintage, electric signal horn. This horn has a nameplate from "The Standard Electric Time Co - Springfield, Massachusetts" and is rated as a "Model A", S/N "A1", "Volts - Series", "60 cycles" and "Amps - 1.9". It measures about 4" square and 1-1/4" deep (2-1/4" deep overall). It has old gray hammered industrial paint and some dots of old white paint. We haven't tested this and are selling it for repair or parts.