I've bought from authenticwatches.com and didn't have any trouble. Most of their watches come with serial numbers and boxes and paperwork. The only thing they don't come with is an Omega warranty. If you like in the UK that might be a problem depending on which watch you get. I got the Speedmaster Professional and figured that I would never need the warranty.
You should ask for the address of our favorite AD. You can get a better price from him although I don't know what his policy is on shipping overseas.
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