Hi Cristos,
As Ztirual says you might be well placed location wise to actually handle the watch before buying
I saw this watch but I'm very sorry to say it's above my budget so I'll have to keep dreaming.
It does look pretty good though and the crown looks original, which is nice and often a good sign.
If you have the book 'Omega Sportswatches' by Goldberger or the big black Omega book you might be able to check the hands against illustrations in there, or there are plenty of references on line. For what it's worth (and I'm no more of an expert than any other Speedy fan on here who looks at lots and lots of pictures etc etc) I think it looks ok, it's just aged very very well indeed.
I won't mention the source but I have dealt with him so feel free to PM if you are'nt familiar.
If you do get it I hope I get chance to see it at a GTG someday.
Best wishes,
Vernon.