The string appears to be new and any clasp may have been added to this rather short 11 & 1/2" length of very small beautiful beads.

Also, it seems to me, the graduation has been adjusted so that the dark rust color beads are spaced evenly. And, I would not be surprised to learn it was originally two and one half times this length; I have seen a number of early 20th c. necklaces which have tiny beads like these toward the back of the neck. -Twenty six inch and longer coral or ivory necklaces with quarter inch to three quarter inch graduations can be frequently found in London markets for comparison. Perhaps, the larger beads were resold as "Edo beads" first.

The seller of this Japanese necklace is in England, sixty miles northeast of London. Great Britain seems to be the recipient of many early 20th c. Japanese and Chinese beads which made their way into the Chinoiserie market in London and Paris.