An Austrian ebonised quarter-striking table clock Jacob Tenzel, Vienna, third quarter of the 18th century The four pillar triple standing barrel movement with four-wheel trains, verge escapement regulated by short bob pendulum and striking the quarters on a bell followed by the hours on a second larger bell after the final quarter only, the backplate engraved with a central rococo scroll cartouche within a broad herringbone border, the 6.5 inch gilt brass break-arch dial with calendar and shaped false bob apertures to the symmetrical foliate scroll engraved and matted centre within applied silvered Roman numeral chapter ring with stylised scroll half-hour markers and Arabic five minutes beyond the arcaded minute track, with scroll-pierced steel hands and gilt scroll cast spandrels to angles, beneath arch centred with a circular signature boss engraved Jacop, Tenzel, Wienn flanked by subsidiary Nicht/Repetit and Schlagt/Nicht Sch: selection dials set within a conforming scroll engraved matted field, the inverted bell top case with elaborate twin cherub and strapwork scroll cast hinged carrying handle and flambeau urn finials to the superstructure over cavetto top mouldings and break-arch glazed front door incorporating foliate scroll pierced and engraved upper quadrant frets and flanked by caddy moulded angles, the sides with conforming gilt lozenge sound frets over break-arch windows, the rear with rectangular door set within the frame of the case, 41cm (16ins) high excluding carrying handle.