According to the American numismatist Robert W. "R.W." Julian 49 medals were struck by the United States Mint in Philadelphia in silver /43 on October 27, 1909, and 6 more on November 2, 1909/.
Silver.
Size 77 mm.
Medal was designed by Charles Barber and George T. Morgan.
Reverse...
1909 american table medal1909 honorary commercial commission of japan medal1909japanesevisittosanfranciscomedal1909年日本實業家來米歡迎紀念章
commercial commission of japan visit us medaljapanese businessman visittosanfranciscomedal