A good and interesting South German silvered quarter striking alarm 'Zappler' wall clock, early 18th century

18-cm engraved pewter chapter ring with Roman numerals, foliate pierced and engraved gilt hands and alarm disc, elaborate chased silvered relief surround with foliate scrolls and shells with Angels and the Virgin and Child above, well made heavy iron posted movement with double top plate, verge escapement and front pendulum with brass cherub bob, rack grande sonnerie striking on two surmounted bells, alarm on a single bell, iron case with hoop and spurs with well painted side frets and doors