Mantel clock with sideplates, 3 pcs., Black marble, 2nd half of the 19th century, with Egyptian incised motifs, partly gilded incisions, on the roof of the clock the sphinx flanked by 2 winged lions, the clock pyramid-like stepped, dial Enamel with Roman numerals and minute ring, guilloché rosette behind faceted gilt mantle-patterned glass rim, blackened Breguet hands, 8-day round work with ½ hour disc striking on bell, 42 x 50 x 17cm, pair of corresponding accessories in Egyptian style, orange obelisks brown onyx marble and black stone with a bronze stand ring, engraved and colored hieroglyphs, dam., h. 59 cm