About the cavalier https://asiamedals.info/threads/3rd-class-rising-sun-order-awarded-to-a-commander-of-the-osaka-army-arsenal-in-1934.29144/
Awarded on September 25, 1926.
Marked with maker's mark 美 for Shobido workshop...
3rdclasssacredtreasureorder3rdclasssacredtreasureorder awarded in 1926
japanese sacredtreasureorder
japanese sacredtreasureorder document
order of the sacredtreasure award certificate
sacredtreasureorder made by shobido workshop
zuihō-shō
勲三等瑞宝章
瑞宝章
Full set that was posthumously awarded on Match 18, 2007 to a noted Japanese information theorist Tadao Kasami who made significant contributions to error correcting codes.
Marked "BZ".
3rdclasssacredtreasureorder3rdclasssacredtreasureorder awarded in 2007
3rdclasssacredtreasureorder document
order of the sacredtreasureorder of the sacredtreasure award certificate
tadao kasami award
zuihō-shō
勲三等瑞宝章
嵩忠雄
瑞宝章
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...
3rdclasssacredtreasureorder3rdclasssacredtreasureorder awarded for ww2
3rdclasssacredtreasureorder awarded in 1945
3rdclasssacredtreasureorder marked m
japanese order of the sacredtreasureorder of the sacredtreasureorder of the sacredtreasure award certificate
order of the sacredtreasure award document
sacredtreasureorder marked m
zuihō-shō
勲三等瑞宝章
瑞宝章
3rdclasssacredtreasureorder3rdclasssacredtreasureorder awarded in 1894
3rdclasssacredtreasureorder awarded to german
order certificate signed by emperor meiji
order document signed by emperor meiji
order of the sacredtreasureorder of the sacredtreasure award certificate
order of the sacredtreasure award document
zuihō-shō
勲三等瑞宝章
瑞宝章