Probably by Tadasuke, 19th centuryOf oval section carved in high relief with the three heroes of the Sangokushi (Romance of the Three Kingdoms), Kan'u (in Chinese, Guan Yu) wielding a polearm beneath a pine tree, Chohi (Zhang Fei) standing in a defiant attitude with drawn sword and Gentoku (Xuan De) seated, holding his sword, the cord holes on the cover ringed with gilt-metal; signed within the cover in an oval reserve Tadasuke, with a glass ojime. 9.5cm x 8.5cm (3?in x 3 3/8in).