Authentic CHANEL lambskin chain square brown sunglasses

This is an authentic pair of CHANEL Acetate Metal Lambskin Chain Square Sunglasses 5210-QA in Brown. These sunglasses feature a classic brown squared frame with gradient lenses. The arms are detailed with a gold chain threaded with lambskin leather and a Chanel CC logo at the hinge. Come with a case. Wear on frame. LENSES ARE PRESCRIPTION and I am not sure what number as these were purchased second hand. Lenses can be replaced.