Hello, Sucker (1941)

G. Remington 'Max' Conway, a fast-talking Broadway swindler, sells Hubert Clippe a dying vaudeville-booking agency. Hubert protests and Conway unloads it on a couple of small-town suckers, Bob Wade and Rosalie Wilson, who invest all their savings in the enterprise. Hubert joins forces with the young couple and gets a job demonstrating a mechanical horse in a business show-window. That gives them the idea of making the agency a business booking former vaudeville artists as performers in "living show windows" in businesses from coast-to-coast.