This is a 1/800 scale model of the "Semi-submersible Floating Ocean Structure Aquapolis," built and exhibited by the Japanese government at the Okinawa International Ocean Exposition (EXPO '75). Size: Width 17cm, Depth 17cm, Height 11cm Aquapolis, which garnered attention at the time as the world's first experimental city on the sea, is known to those in the know. This structure, which seems to embody a boy's dream, is also famous for having Osamu Tezuka as its producer. The main body is made of aluminum, and it comes with a plastic cover. There is a chip on a part of the cover (see photo). Thank you.