Assuming that the group is 100% authentic, this is the latest coordinate for the M mark on the actually issued Japanese order https://asiamedals.info/threads/mark-m-on-japanese-orders-and-medals-who-and-when.14818/
Certificate No. 1 765 103 issued on June 30, 1945 /only two months left...
3rd class sacredtreasureorder
3rd class sacredtreasureorder awarded for ww2
3rd class sacredtreasureorder awarded in 1945
3rd class sacredtreasureordermarkedm
japanese order of the sacredtreasureorder of the sacredtreasureorder of the sacredtreasure award certificate
order of the sacredtreasure award document
sacredtreasureordermarkedm
zuihō-shō
勲三等瑞宝章
瑞宝章