IT IS A ATTRACTIVE ITEM AND APPEARS WELL MADE CONGRADULATIONS I WOULD CERTIANLY HAVE BOUGHT IT FOR MYSELF.
I HAVEN'T SEEN A LOT OF THESE ON EBAY SO THERE IS A GOOD CHANCE IT MAY BE THE REAL DEAL. THE ONLY THING I CAN THINK OF TO DETERMINE IF IT IS A REAL WEAPON WOULD BE IF THE CHAIN IS IRON RATHER THAN BRASS OR BRONZE. A BRASS OR BRONZE CHAIN MADE WITH THOSE KIND OF OPEN LINKS WOULD BE VERY PRONE TO BREAKING OR COMING APART. THE LINK SHAPE IS DECORATIVE BUT IT MAY HAVE ALSO HAVE HAD A FUNCTION OF CATCHING AND STOPPING A BLADE BETTER. MANY OF THE MORE RECENT CHINESE ANTIQUES ARE ARTIFICALLY CORRODED AND HEAVLY PATINATED YOURS IS NOT SO THAT IS ALSO A GOOD SIGN. SORRY I CAN'T BE OF MUCH HELP. GOOD LUCK