Hi all, I know very little about this breast star exept its 9cm accross silver and enamel the Orders and Medals Society of America (OMSA) have it identifies as "the Military Order of Notre Dame of Sorrow". It may also be called "the Royal Sovereign Military order of our lady of Mercy". .Any information would be gratefuly received. I bought it as it is so pretty rather than having any idea what it represents.