The gesso missing pieces could be replaced by taking moulds of the existing original ones, ( if you felt confident to do it).
Antique 19th Century French Brass Hardware Door pierced Finger Plates
Antique 19th Century French Wrought Iron Folding Day Bed Childs's Cot Bench Pair
Antique 19th Century French Empire Flame Mahogany Sofa with Carved Details
Antique 19th Century French Ormolu Gilt Bronze Furniture Applique Face Mask Legs
Antique 19th Century French Ormolu Gilt Bronze Furniture Mount Appliques x6
Antique 19th Century French Walnut Louis White Marble Topped Chest of Drawers