A ROMAN ORMOLU-MOUNTED MICRO-MOSAIC PANEL depicting Trajan's Arch with the Forum beyond and inscribed 'IMP. CAESAP. ID IV I/TRAIANO AUCUS/SENATUS S.P.Q.R.', in an elaborately-cast pierced, engraved, scrolling-foliate arabesque frame centred by a mill-raies panel inscribed 'S.P.Q.R.' AND SURMOUNTED BY JUPITER'S EAGLE WITHIN A LAUREL WREATH, UPON AN ORMOLU EASEL SIMILARLY ENGRAVED WITH SCROLLING FOLIAGE, 2ND HALF 19TH CENTURY