Marked with a Katoya Medal Company mark https://asiamedals.info/threads/badges-and-watch-fobs-made-by-katoya-medal-company-katoya.27093/ and 純銀 pure silver hallmark.
日本郵船株式會社 - Nippon Yusen Kabushiki Kaisha also known as NYK Line, is a Japanese shipping company that traces its history back...
japanese silver bonbonniere
katoya medal company
nipponyusenkabushikikaisha
nyk line founding commemorative bonbonniere
silver case made by katoya medal company
かとや徽章商会
日本郵船株式會社