From Andy´s link
The Order of the Crown is awarded in five classes, plus two palms and three medals:
- Grand Cross, which wears the badge on a sash on the right shoulder, plus the star on the left chest;
- Grand Officer, which wears a star on the left chest, and may also wear the neck badge;
- Commander, which wears the badge on a neck ribbon;
- Officer, which wears the badge on a ribbon with rosette on the left chest;
- Knight, which wears the badge on a ribbon on the left chest;
- Golden Palms, which wears a wreath of golden palms on a ribbon on the left chest;
- Silver Palms, which wears a wreath of silver palms on a ribbon on the left chest;
- Gold Medal, who wears the medal on the left chest;
- Silver Medal, who wears the medal on the left chest;
- Bronze Medal, who wears the medal on the left chest.
If my english is not that wrong you need info about the uniform.
Also, in Andy´s link there is a picture in section "awards conditions" with 11 of this order condecoration and yours seems to be bottom left (= Officer), isnt it?