Marked: Sterling, the maker is probably Hermann Co. Inc., F.A., scratch marks on the back. Hermann Co. Inc., F.A., Melrose Heights, MA, Founded in 1908. Height: 0.52 inch Length: 0.74 inch Weight: 2.34 grams Condition: Some enamel chips as shown. Clasp works well. Vintage Sterling Silver 925 Enamel Squirrel Nut Brooch Pin