Yes, gray market omegas often have the serial number removed. I'm just pointing out the fact that you shouldn't just jump the gun and assume the watch in question is fake, especially if you were going to make it public on another board. It would affect the seller's potential sell.
I know that once you put genuine parts on certain replicas, they can indistinguishable from the genuine cosmetically but does that mean we should call fake on every 42mm PO that doesn't come with box or papers??
Anyway, lets move on.