These are lovely pair of authentic Vintage Sterling Silver Mikimoto Saltwater Akoya Cultured Pearl Screwback Earrings. They feature 6 pearls with great luster.  They are set in a cluster design with flower design. The backs are stamped "M" for Mikimoto and "S" for sterling. Total length is 3/4 inch. From Japan 1940's-1980's. They are in good condition.  Any questions Ask!  

Please see photos for all the details.