Antique Carved Shell Vermeil Clip On Earrings

Beautiful antique carved shell cameo earrings - earrings are hallmarked but it is difficult to read the stamps - these are at least Sterling, likely with a 12 or 10 kt gold wash (gold wash has diminished slightly over the years, so the finish now appears as a brassy silver) Earrings measure .5" x .75", bezel measures 3/8" high