This is a stunning vintage Art Deco brooch in sterling silver set with very tiny marcasites by the jewelry designer Theodor Fahrner of Pforzheim, Germany. He was one of the premier makers of art deco jewelry in the 1920s and 1930s. This lovely pin is in the form of a flower with a delicate ribbed design. The marcasites look like dewdrops on the petals. It is marked with the Fahrner mark and 925 on the back.
It measures about 1 3/4 inches across and it is in very good condition. There are a couple of missing marcasites in the center of the flower but it is very hard to see this.