Ivory sphere with various openwork concentric spheres; Ivory sphere with thirteen round holes. The wall has been cut into relief and partly worked away. There are fields with figures in a landscape; outside these fields of flower vines. Through the holes the 'inner shells' are visible; cut away in different geometric patterns. At the top a chain and at the bottom a (discolored) orange brush.; anonymous; Kanton; 1800 - 1825; ivory; cutting; d 16 cm