8-day weight driven movement with anchor escapement and rack Dutch half hour striking on two bells, alarm, burr walnut case.
30-cm (12 inch) wide brass dial with engraved border, silvered and engraved chapter ring with Roman chapters signed Andries Vermeulen, half hour and half quarter marks, pierced steel hands and engraved silvered alarm disc, matted centre with subsidiary seconds and apertures for date and day of the week, pierced cast foliate spandrels.
arched silvered engraved sector callibrated IIII-XII-VIII showing the movement of the sun from sunrise to sunset, indicated by a steel pointer with extending and retracting sun mask across a finely engraved revolving disc showing a flat representation of the sky with the Signs of the Zodiac with annual calender, thus showing the position and the elevation of the sun in the corresponding zodiac symbol, a further inner revolving disc showing age of the moon, the hwole observed by finely engraved cherubs observing the sky below
weight driven eight day four pillar movement with anchor escapement, half hour Dutch rack striking on two alternating bells, alarm on the larger bell
The fine burr walnut veneered case with caddy-topped hood surmounted by three giltwood urn-finials, foliate pierced wood frets below a shaped cornice with carved ornament, brass-capped front columns flanking the break-arch glazed door, long shaped trunk door with a further carved ornament and cast brass annular lenticle, aside bombe plinth raised on ball feet;
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