AN ITALIAN ORMOLU AND ORMOLU-MOUNTED SIENA MARBLE URN of Campana form, the beaded dished bowl with egg-and-dart everted rim, the waisted frieze mounted with trailing vines, the acanthus-base with interwoven twin-mask handles above a domed stiff-leaf cast spreading socle and stepped plinth, above a lotus-leaf and entrelac-and-rosette stepped base, the urn 19th Century