Authenticity confirmed at a Piaget specialist. I was told, "It's too old for the current system." I'm not familiar with Piaget, so I'm not sure about the surface material, but it was the type that sticks to a magnet. I believe it's likely magnetic stainless steel, an iron alloy, or an alloy containing ferromagnetic metals like nickel or cobalt. When I had it appraised three times at a pawn shop, they couldn't make a determination, so I decided to have it examined by a Piaget specialist, and it was confirmed as authentic. Please refrain from purchasing if you have any concerns. Weight: 58.9g - Non-functional (listed as junk) Please review the images carefully as they represent everything included. No returns accepted. * Shipping daily. - Please provide a receipt confirmation within 24 hours of receiving the item. (Please contact me if you anticipate a delay.) - Customers paying at convenience stores, please make your payment promptly. Please read the product description before purchasing (o^^o) Antique enthusiasts are welcome. Thank you.