Silver and nephrite antique table clock with precious stones

The clock sits on four silver gilt toupie feet, and features a curved nephrite base, atop which are mounted two square and two round nephrite columns which are mounted with silver and inlaid precious stones to the top and bottom. Hung on a support between the central columns is the circular clock dial, which features a white dial with black Roman numerals and gilt details as well as the signature 'E. DREYFOUS, To Their Majesties'. Mounted to the top and bottom of the dial are intricately worked flowers of silver gilt with a crown, all inlaid with precious stones. The back is inscribed 'METAL DORÉ', serial number 164180.