Vintage Mikimoto Ribbon Japanese Cultured Saltwater Akoya Pearl Brooch- Sterling Silver

This is a lovely vintage Mikimoto ribbon Japanese saltwater saltwater cultured pearl & sterling silver brooch. The pearls are 6.00mm round. They have fantastic luster with rosy overtones. They are a white color. It is made of solid sterling silver with a high polished ribbon design. It is stamped "M" in a clamshell for Mikimoto and "S" in a square for sterling silver. It measures 1 3/4 inches long. From Japan 1950's-1980's. All pearls are truly vintage and have only been lightly cleaned.