Gilbert Clock Co. Oak Mantel Clock. Material: wood, metal. Size: 14" x 22". Description: mantel clock is the "Hawk" model manufactured by the William L. Gilbert Clock Co. of Winsted, Conn. It features a carved oak case with Eastlake style linear and geometric detailing and is finished in a dark stain. It has a white dial with Roman numeral markers, two winding arbors and a gold reverse painted glass-front door The pendulum is currently detached and the original key is included.