> Cheap ski equipment, Rolex watches All Rolex watches have serial numbers and there's an official database of stolen and lost rolexes. A police report should be filled and sent to an AD (authorized dealer). Knowing this allow righful owners to find their watches, selling found Rolex is... theft? FWIW when travelling the customs may ask you for the invoice of your fancy watch (I always have mine in my wallet).
The idea that customs might ask to see the invoice on your very fancy special watch sounds like watch company marketing to me. I've never even heard of that happening.
It only really matters for very expensive things, they don’t usually bother pursuing anything unless it’ll be a big payday.