This was purchased by me I am guessing 6 years ago from a collection of SS material that was quite nice and apparently I started to write it up at one point and never finished it. I wanted to look into it a bit further but I never got to it other than to grab an example at a show to find it seemed lighter and was unmarked. A good quality piece manufactured of silver that I had planned on looking into and never got to. It was referred to as a wedding brooch back at the time and I have only seen one other that matched this one and it could be the same one. A good research project for someone or just enjoy it.