Iron tsuba, Japan, Edo period, 19th century Of kawari gata form, decorated in maru bori sukashi with a thousand monkeys (senbiki-zaru). 6.4 x 5.8 cm The thousand monkeys motif was the hallmark of the Yagami 矢上 school, based in Hizen province (present-day Nagasaki prefecture). The representative master of the Yagami school was Mitsuhiro 光広, who was active in the second half of the 18th century. His name was then used hereditarily until the end of the feudal era (1868).