18th-century solid mahogany Louis XVI secretary

18th-century secretary in mahogany and/or solid walnut Louis XVI style Upper section opening to a drawer. Central section opening to a drop-down revealing a niche with 6 drawers, covered with green felt. Lower section opening to two doors. Original marble top. Max dimensions: Height 142, Width 82, Depth 41.5 cm. Presence of a working key for the drop-down. No lock on the lower doors. Very discreet chip at the back of the marble (possibly original). Various small marks inherent to use. Green felt not original, as well as the drawer pull knobs of the interior drawers.