This is a Large 925 Silver Butterfly  Brooch,it is marked 925 & makers letter D to back.It is in very good condition with general wear & has a safety chain attached, very much in the Art Nouveau,Modernist style,it measures approx 7.5 cms height & 5 cms max width,weight is approx 19.5 grams.Please see photos for all details....................most impressive & unusual item.