This is a lovely pair of mid-century Japanese saltwater cultured akoya pearl and sterling silver cufflinks by Theda.

They feature highly lustrous white/cream pearls with light rosy overtones. They measure 4.25-6.00mm and are round with even color. They are set into a  square sterling design with brushed texture. 

They are stamped "STERLING". Nice weight and distinct retro look. Original box is in good condition but does have a few worn spots on the outside. 

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