This is an Arita-yaki brooch from "Toshikane (俊兼)," established in 1931. Kanetoshi is a porcelain jewelry brand that utilizes Arita-yaki techniques. It is no longer produced today and is known as phantom jewelry. - Size: Approximately 4.5cm x 2cm There are fine scratches on the back when held up to the light. Stamped with "Kanetoshi."