As for today the exact owner of this mark remains unknown. Presumably mark was used by Namikawa Yasuyuki /katakana ナ reads Na/. Unfortunately, at present this hypothesis cannot be conclusively proved.
Workshop that used this mark was active during the first quarter of the XX century...
japanesemedalwithmarkナjapanese order made by namikawa yasuyuki
japanese order withmarkナ
manufacturer of japanesemedal
manufacturer of japanese order
markナ on japanese orders and medals
namikawa yasuyuki workshop
order of golden kite withmarkナ
order of rising sun withmarkナ
order of sacred treasure withmarkナ
About mark ナ https://asiamedals.info/threads/mark-na-on-japanese-orders-and-medals-who-and-when.28707/
Three 7th and 8th class Sacred Treasures orders with mark ナ.
japanese awards and decorations
japanesemedalwithmarkナjapanese order marked ナjapanese order withmarkナjapanese orders and medals
order of sacred treasure
order of sacred treasure marked ナ
sacred treasure order marked ナ
sacred treasure order withmarkナ
瑞宝章