These amazing Japanese models of beetles were made during the late Edo period, which ended in 1868, and into the Meiji restoration period. Every joint on each model articulates, including the flapping of wings.
These were made by master metalsmiths/armorers. During the Meiji period, the wearing of swords was outlawed, so metalsmiths had to find a new outlet for their skills. Articulated insects were one.