This product is an antique dial/face for various types of clocks, including mantel, grandfather, and wall clocks. It is an original part manufactured by Gilbert in the early 20th century (1920-1949) in the United States. The dial/face is made of metal and measures 140.3mm or 5.52 inches in length and width. It is compatible with various clock brands and models, but specific compatibility details are unknown. This product is a vintage collectible item for clock enthusiasts and collectors.