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".
cup with imperial seal of the emperor of manchukuo
imperial seal of the emperor of manchukuo
manchukuo silver cup
manchukuo silver cup with orchid flower
mori yoko workshop
森洋行
森洋行謹製
満州国バッジ
満州国溥儀勲章徽章