any idea of value?

[Soloyanis]

17" 6mm to 2mm graduated strand
bought in Japan in 1964
Mikimoto
no clue if smooth or gritty

 

[GemGeek]

One thing you can do is explore what used Mikimoto pearls are selling for on Ruby Lane or eBay. eBay has a selection to see completed auctions so you can see the actual sale price. We could get a better idea of what quality the pearls are by getting a close up of a few pearls on a white paper towel, preferably in indirect natural light.