Mikimoto Pearl neckless/earrings , expert advice needed!

[Nickkk10]

I recently game across this neckless after my grandmothers passing, I heard Mikimoto items are sometimes extremely valuable and Im interested to know how much this item is worth. The only identifying marks on it was on the gold colored clasp ' M 750'. The case its in looks pretty Old. Any ideas?
Thanks

 

[Caitlin]

I don't see it. We need some photos to tell you anything. We love photos of Mikis with closeups of the clasp. And a snap of the box.

The value depends on a lot of factors, but mostly lies in what someone may wish to pay for the clasp and the box, in addition to the usual value of an akoya necklace.