Art Deco Sterling Silver Filigree Pin Brooch - Circle with a Bow

Dating to the 1920s/1930s or so, here's a Sterling Silver (tested,not marked - no room really) circle pin, all filigree with a decorative bow. The pin measures 1-1/8" high/wide; weight is 2.2 grams. Old fashioned safety catch at the back to hold the pinstem in place. Vintage patina to the silver - a light polish will bring up a brighter shine.