Wooden clapper from the Cotton Club promoting Ethel Waters

This is a wood clapper instrument with black etched type on front and back. Consisting of three pieces of wood, two small rectangles are attached via thin metal strips to the large paddle-shaped base, one on each side. There is black type on both small wooden rectangles. The type on one side of the clapper reads, "The Cotton Club/ Aristocrat of Harlem/ Lenox Ave. & 142nd St. / Phone Bradhurst 2-7767-1687." On reverse side type reads, "Hear/ Ethel Waters/ Sing/ Stormy Weather/ Geo. Dewey Washington." There is a decorative border in black ink around both rectangles. There is text on the reverse side at one end of the rectangle that reads "National Bo [illegible] Co. / [illegible] west 64th [illegible]."