I don't think I have ever seen such a large butterfly pin but here it is and it is sterling silver. The wings are beautifully done with an open work design. It measures about 3 1/8" x 2 3/4" across. The earrings are screw backs. The measure 1 3/8" top to bottom. This is pre-eagle jewelry and is simply marked Silver Mexico. It tests sterling silver and has some old patina which can easily be removed if you wish. All pieces are in excellent condition.