These are an authentic vintage pair of Mikimoto Japanese akoya saltwater cultured pearl screwback stud earrings. 

The pearls are highly lustrous with rosy overtones and measure 7.00mm. They are set in high polished gold.

They are made of solid yellow gold. Stamped "M" in a clamshell for Mikimoto and "K14" for 14K solid gold. From Japan 1940's-1980's.

All pearls are truly vintage and have only been lightly cleaned.