This is a lovely sterling silver and pearl screwback earrings by Mikimoto, Japan. These earrings probably date to the 1940s. They measure 1" x 5/8" and each is set with 4 pearls ranging in size from 4mm to 5mm. The earrings are in excellent condition and are fully signed "Silver 950" together with the Mikimoto mark. See my other items for the matching brooch.