Mikimoto - A cultured pearl necklace

ninety nine graduated cultured pearls, approximate diameter from 3.5 to 7.15mm, strung knotted to a diamond cut barrel shaped clasp set with a pearl, stamped 'SIL' maker's mark 'M' within a shell shaped cartouche for Mikimoto, length 54cm, weight 15.8g

Condition Report
Overall condition: Good
The string isn't stretched
Heavy scratches to clasp, consistent with age