Quality carving & signed Shell - Muses at Olimp, Big Silver Sterling filigree Brooch circa 1925

Quality hand circa 1925 carving depict Muses with lira and flowers in their hands, on Olympus (little crack on left), set in the unmarked filigree Silver brooch. Total measures 1-3/8” tall by 1-7/8” wide, or 39 mm. by 46 mm. . Weight is 10.88 grams.