This item was originally displayed at the Shiroi Ainu Kotan. It was collected by the first director, Takeichi Moritake Ekashi, and others during the era of the Shiraoi Municipal Folk Museum (Poro Kotan, the predecessor of Upopoy, and even earlier than the former Ainu Museum), which opened in 1967. It was once stored in the Folk Museum. In 1984, when the museum became the former Ainu Museum, the collection was reviewed, and it was purchased in bulk by an Ekashi who lived in Shiraoi. This is an Ainu earring called a "Ninkari." It was actually worn by the old Fuchi (elderly women). The material appears to be nickel silver, although I initially thought it might be brass. Nickel silver jujube beads are attached as decoration. They spin.