Good Evening! I found this nice round Mexican Sterling Silver Brooch with Mother of Pearl Inlay. I can make out the eagle mark as being Eagle Mark #4 but the makers mark is totally indistiguishable. However, it is in the shape of a 4 winged butterfly with writing in the center. The only writing I think I can make out is an "R" and "950". Any help you can give would be greatly appreciated! Thanks so much!
David