Large & Heavy EISENBERG Signed Chromium with Rhinestones BROOCH

My wife picked-up some pretty special Fine & Costume jewellery during our holidays in Florida this winter and I wanted to lump them in one upload to show everyone but she suggested showing this large EISENBERG Brooch by itself. It is quite heavy and measures 4" long by 2" wide and is in the shape of a flower (bleeding hearts?) with a bow at the base. I did look up some information on the internet on EISENBERG Jewelry but would anyone how old this brooch is and since it was so heavy and with a sharp clasp, was it made for wearing on coats only? RER