These are limited edition up cycled necklaces made with authentic gently pre loved LV locks. They are vintage and naturally aged over time. The locks are not in perfect condition. They have different serial numbers on the bottom. The VB&Co designs stainless steel chains are 100% non tarnishing . Hypo allergenic and naturally nickel free. Lock and key are removable. Adjustable 17"-20". ***This listing is for one necklace. Other layering necklaces are sold separately