In 1904 (Meiji 37), a “monster gold” nugget weighing 2.25 kilograms, and with 83% gold content, was extracted from the Shishiori Mine
. With even small nuggets being difficult to produce, one of this size astonished the world. When exhibited at the St. Louis World’s Fair held in the same year, it received a bronze medal. This is a letter given to commemorate that award. This demonstrated to the world the potential of “Zipangu, the Land of Gold,” and serves as proof of the state of gold production in Michinoku.