An Italian micro-mosaic circular panel with nero belgio moulded border and malachite slip centred with a view of St. Peter's within a lapus lazuli border and surrounded by eight other views within marble borders, including the Colliseum, The Temple of Saturn and the Temple of Vesta, 20ins (51cms) diam, on a late Victorian mahogany stand with circular revolving top, the shaped frieze on cabriole supports and scrolled toes, joined by an arched circular undertier, the panel 20ins (51cms) diam