A rare Dutch Frisian polychrome alarm 'stoelklok' with horse rider automaton, third quarter 18th century

17.5-cm polychrome painted dial with Roman numerals, pierced brass hands and alarm disc, flower spandrels and landscape centre, the automaton with horse riders above with connection to the countwheel bell striking of the brass posted verge movement, alarm on a bell, pierced gilt lead ornaments surrounding the dial and surmounting the polychrome painted bracket with mermaids to the sides