Yellow Mantel Clock

Yellow mantel/shelf clock that appears to be either laminated wood or early plastic. Body is stamped "Imperial Brand", clock face printed with "Manufactured by Waterbury Clock Co - USA". Inheirited from a family member who recently passed at 97. Box it arrived in labeled "Imperial Brand Clock B715" on the side and "E. I. du Pont de Nemours & Co, The Arlington Works, New York City" on top. Have not been able to find info on these companies online.