A collection slips of paper with the "kao" -- signature sigil -- of the daimyo (samurai feudal lords) of the provinces of Japan during the late Edo period (1810 - 1868), the end period of the Tokugawa Shogunate
Papers included with the set indicate this collection was titled "The Daimyo Written Seal Collection", and was the possession of one noble house. Sold at auction several years ago, it went for 169,000¥, and would be significantly higher if sold today