By Kakosai Shozan, 19th centuryOf oval form, bearing a kinji ground, lacquered and inlaid with a monkey-trainer, his monkey dancing with a street performer on the reverse, in takamakie with inlaid ivory details, the interior of nashiji, signed Kakosai Shozan saku and Shibayama; with a wood and stag-antler netsuke of a tsuzumi, unsigned. 8.5cm (3 3/8in).