Some of the pictures of fakes that I've seen show a watch that is disturbingly good, but with a few tells. One in particular seems to be the orientation of the movement itself. You can tell by looking at the orientation of the winding barrels with respect to the crown. Both pictures below are borrowed, as I'm not wearing mine today. In the first picture, which is fake, Barrel 1 is closer to the crown than it is in the real one below. Also, the serial number is engraved facing inward on the fake. I believe the serial number on a real one is facing outward. And the material designation (like "Stainless Steel") should be engraved on the opposite lug (obscured in the fake picture), also facing outward if my memory is correct.