Portico clock with a rare dial displaying the sexagesimal and republican hours (applied between September 22, 1794 and April 7, 1795, according to a decree of the National Convention). The movement is supported by a terrace with two filleted columns and two pilasters, each with a sheathed putto. White and black marble carved with gilt bronze highlights. Dimensions : 57 x 41 x 15,5 cm.