By Tatsuo, Meiji (1868-1912) or Taisho (1912-1926), early 20th centuryNaturalistically cast, crawling with its head emerging from its carapace and turned to the left, its carapace detachable and forming the cover; signed on the base with chiseled characters Tatsuo within a rectangular reserve. 2.6cm x 14.2cm (1in x 5?in). (2).