My experience is there's no consistency when inporting a watch from a manufacturer. No experience here having a watch shipped to me from a Swiss based manufacturer, but have done so from Germany a handful of times, and also from Singapore, and have received international shipments across three different shippers (UPS, FedEx and DHL). All were over $1K transactions. On a few I got dinged for import duty fees, others not. Never have I been asked to provide a SSN, a copy of any personal document, or to complete any online forms to provide personal info. If I remember correctly once I had to complete an online form to verify address and to confirm I was not importing the item as part of a business. I am totoally ignorant on what the actual laws or procedures are, but, me personally, I would be EXTREMELY reluctant providing my SSN to a shipping company, and even more so to provide an actual copy of my personal tax documents, passport, or SSN card. As others have recommended, would contact DHL. I wonder if how the shipper prepares the documents on their end when they prepare the shipment makes a difference, also if you have an account setup with the shipping company helps streamline things (I have personal accounts setup with FedEx and UPS, but not DHL).