The movement of Erard, veneered in amaranth, sycamore. and fruitwood marquetry and opening to reveal a birds eye maple veneered interior, inscribed Par Brevet d'Invention Seb. & Pre Erard 13 & 21 rue du Mail Paris, stenciled number 84325 for the serial number movement, the keyboard lid signed in brass inlaid cursive letters Erard/Paris, all gilt bronze mounts with mercurial gilding and two toned burnishing, one lion head cast chute has been removed to reveal the mark ZN from the bronze master model.
