A LOUIS-PHILIPPE PATINATED-BRONZE AND SIENA MARBLE MANTEL CLOCK, 19TH CENTURY, the rectangular case in the form of a classical table centering a circular dial within an oakleaf and acorn wreath between monopodiae supports headed by griffin-heads, flanked by a seated philosopher and a container of scrolls, on an acanthus-cast rectangular plinth, raised on scrolling foliate feet--22¾ in. high