Sterling Silver Filigree Fan Brooch Antique 1910 To 1930

This is in great condition with some very light patina. The box has some wear but nothing excessive considering its age. The brooch measures about 1.75x1.75 inches. There’s no markings on the brooch itself but the made in china stamped on the box dates to 1910-1930. This does not have a purity marking but has been acid tested sterling silver.