This is a great Art Nouveau brooch by the famous company --Unger Brothers. Unger Brothers, founded in 1872 in Newark, New Jersey. Many of the Unger brothers designs were credited to Emma Dickinson Unger, whose dies were used from 1880 until 1910. There is a very similar brooch pictured in the book" Silver Jewelry Designs, by Nancy Schiffer, page 106. The brooch is all original with the old C clasp, that works fine. The brooch measures 2 1/2" X 2", and weight is 13.2 g. The detail is beautiful. With a loupe I see that there is a small dent in the tip of her nose. Wonderful Art Nouveau large brooch.