AN ITALIAN RECTANGULAR SPECIMEN MARBLE TABLE TOP geometrically inlaid with porphyry, Sicilian jasper, lapis, onyx and other specimen marbles within a line-inlaid border, on a 19th Century oak stand with panelled frieze centred by a patera flanked by stylised foliage, on turned bulbous foliage-carved baluster tapering legs on toupie feet, previously with cross-stretcher, the top late 18th Century