Just remember that the Chinese have faked everything. I bought a pair of Mont Blanc cufflinks at a garage sale for $5.00, in the box. You would swear the box is the real deal. The cufflinks were just somehow wrong. Hard to put your finger on it. A golf pro told me that the Chinese are even faking the high-end golf clubs.
Tip on watches, which sometimes work. Type the brand and serial number into google. Fakes will tend to use the same serial number over and over again. There is a specific website you can check for watches and serial numbers; can't remember of find it now.