Cups were manufactured in three sizes by Mori Yoko workshop in Mukden and Dalian https://asiamedals.info/threads/badges-labels-and-marks-of-mori-yoko-workshop.20422/
All known cups bear two marks: "純銀" /pure silver/ and "Mori Yoko".
All known cups bear two marks: "純銀" /pure silver/ and "Mori Yoko".