Help with pearl identification.

[FFSurrey]

Good afternoon all. Is anyone able to shed light on the authenticity of these? I can't find much online about Nippon Ltd or this clasp ...as no M letter just a crown and heart shape on back. Approx 18.5 inches. From 1970s. Many thanks..

 

[jshepherd]

You've got a strand of near-round akoya pearls. Nippon is the Japanese word for Japan, so the store they came from is called "Pearls of Japan Ltd." It may have been a small shop in Shibuya.

 

[FFSurrey]

Thank you so much. Appreciate it.