French No. 9159: A Regency satinwood four glass mantel chronometer, the four pillar single chain fusee movement with maintaining power, the wheels with five crossings, the platform escapement with blued steel helical spring, cut bimetallic compensated balance to Earnshaw spring detent escapement, the plain backplate signed French Royal Exchange, London. No. 9159, the foliate engraved silvered dial with Roman chapter ring and subsidiary seconds at XII, blued spade hands, the typical case on brass bun feet with stepped top and typical carrying handle