http://www.chronocentric.com/omega/consumeralert.shtml#policies
I have personally seen Omegas with serials removed, so it does happen. And it can complicate things for the buyer.
I would suspect that many other (more expensive) brands turn a blind eye to the issue, and so there's no incentive for the gray market dealer to remove the serial in that case.
It may not be an issue with Omega any more since they are aggressively elevating their brand profile and prices.
On the other hand, if they are still concerned about this, I would under no circumstances buy a gray market Omega watch. This would be especially true if I were going to buy one of their watches with proprietary movements such as the jumping hour coaxial planet ocean.
Not sure why everyone is getting so huffy about this issue. You guys sound like Reev when he defends buying fakes.
Edited by Hayward - 9/30/12 at 5:37pm