I would recommend finding an expert on Chinese cash coins. I have no doubt that the coins themselves are real, but they appear to have been arrange do make a sort of charm, like this:
http://www.mercurytreasures.com/feshcosw.htmlThat is a modern fabrication; they were made in the 19th century and earlier, too. If that is indeed genuine 19th century twine holding them together, they would be worth a bit more, even as they are. If not, they are only worth about 10-25 cents as individual coins.