I found this on my recent visit to NYC. I just love old bar pins, I converted it into a pendant with the use of a lazer welder so the piece was not harmed. This one is filigree galore! It's so fabulous. It has a single FRENCH cut blue topaz (probably synthetic which was typical of the time frame) bezel set in the center with a tone of milgrain and filigree surrounding it. Wonderful fleur-de-lis pattern.