Necklace

Five sets of shell and metal items on mustard colored thread. Each cord has shell fragment at center and wrapped metal pieces on either side of shell separated from each other by a knot in the cord. D and E are missing shell piece. F is another piece of shell with cord and metal piece missing. Each of the shell pieces are identical in type and very similar in size. They are light brown color with hole. Metal pieces wrapped around thread are 1 cm x .3cm with squiggles or writing on each one.