For your consideration is a vintage Mikimoto Akoya Pearl single strand necklace.  This is knotted between the 6mm round pearls.  The necklace is 17" long.  The clasp is marked silver and signed and has a pearl attached to it.  

I have recently acquired a very large estate.  There were many jewelry and collectible pieces.  I will be listing many more items in the next several months as I dig thru all the boxes.  Thanks for looking.  Check my other listings for more jewelry, vintage, antiques, collectibles, clothing, fabrics and holiday items.