This is a necklace from 1017 ALYX 9SM. I purchased it used last winter and wore it a few times. There is some discoloration on the back of the clasp, but it's not visible when worn, so it's not a concern. I bought it from a major second-hand shop, so it is authentic. Please note that there is no box. Please purchase only if you understand that this is a used item. Thank you for looking.