Vintage Skull and Medallion Necklace (Mens Listing)

Used In Perfect condition. There is no sign of wear and tear This amazing piece was purchased around 30 years ago in Mexico The Medallion is approx 2 inches in width and length The Skull Connector is 1 inch Total dimension is 3 inches by 2 inches The chain measures 24 inches I cannot find any markings to determine the metal Please note I am listing in womens as well I only have one