In 1854 Perry duly negotiated the Treaty of Kanagawa (now part of Yokohama), opening up two ports, Shimoda on the Izu Peninsula and Hakodate in Hokkaido.
A treaty opening up ports in Shimoda and Hakodate was negotiated in 1854.
Based on the fragment, Fink speculates that the original flute contained at least six holes and was close to 16 inches long.