Silvered and gilt bronze KPM porcelain antique casket

Of rectangular form and in the Louis XVI style, the porcelain plaques depicting amorous couples mounted with rich gilt and silvered bronze corner mounts with scrolls, cornucopias, bows, and a grotesque mask escutcheon, the hinged cover topped with a silvered bronze cherub handle, on scroll feet, the porcelain with sceptre marks flanked with 'S.g.r.P'.