The eight-day clock is monumental, standing over eight feet tall. Its bonnet has a pair of scrolls terminating in leafy rosettes, and three flaming urn finials. The bonnet has a wide, arched, glazed face door flanked by slender three-quarter colonettes attached to the frame. There are no side windows. The clock face is brass, with six applied cast spandrels: four at the corners of the dial and two in the broken arch, flanking the brass signature boss, which is inscribed "Edw. Duffield / Philadelphia." The dial's chapter ring has Roman hour numerals and Arabic minute numerals. There is an inset seconds dial below the XII, and a square date aperture above the VI. The waist of the case has flanking fluted quarter-columns. The pendulum and weights are reached through a door cut from a single plank of fine grain wood, with a gothic arched top and plain thumbnail-moulded edges. The base of the case has conforming front corners and an ogee-moulded applied front panel. It stands on shaped ogee bracket feet.