Hello to all

I am a new young on this site.

I am French and collector of Japanese medals.
I have just purchased a set : medal of 7è class of the order of the sacred treasure with its diploma and the translation by the embassy of Japan.
This decoration was given to a police officer asked to assure of the protection of prince Hiro Hito (not still emperor) during his visit in Paris June 2nd, 1921.

(Visit of the Eiffel Tower and meeting with Gustave Eiffel, visit of "Le Louvre", "Les Invalides" and the military airport of the Bourget.)

This police officer was decorated a few days after the visit of Hiro Hito June 7th, 1921.

I do not know how to read the characters Kanji and I shall like knowing if it is mentioned in the diploma the motive for the delivery of this decoration.
 

Big thanks to the one who will be kind enough to answer and help me

Cordially

Patout