Vintage Silver Swan Brooch

Vintage, sterling silver, puffy as in hollow brooch featuring a glorious swan with outstretched wings. Masterful craftsmanship with fine and smooth detailing. This grand bird is presented in a matching size! Big. 3&3/8" tall X 2&3/4" wide X appx 3/8" thick. 33 grams. Very minor surface wear, plenty of patina, no dents. Over all good vintage condition. C clasp ( no roll over ). I would change that have a more secure clasp put on. Tested and stamped Sterling. Maker's mark looks like a 3D bird.