This is a detailed quality pair of mid century modern Japanese akoya saltwater cultured pearl and black onyx cufflinks. The pearls are 5.00mm round. They are highly lustrous with pink overtones. They are set on top of jet black polished onyx. No noticeable chips or scratches. They are made of solid sterling silver with braided and milgrained edges. They are stamped "STERLING" for sterling silver and "PAT'D 0442902-86". They measure 17mm across the face. From Japan 1930's-1970's. All pearls are t Mid Century Modern Japanese, Onyx Cufflinks, Modern Japanese, Black Polish, Akoya Pearls, Cufflinks Men, Cultured Pearls, Jet Black, Vintage Charms