This one happens to be a "genuine copy".
It's a very close facsimile to the Omega original here.
I retrieved it from the watchmaker this morning after a minor repair. He said it looks externally identical to the real watch, and that it has a Japanese made movement inside.
I've noticed that the orange coloured band printed on the bezel scratches easily. You can see a couple of minor scratches between "30" and "40" on the bezel.
The watchmaker also advised me not to screw the screw-down crown all the way in, as this could jame the watch mechanism due to incorrect tolerances. Of course, he also advised me not to immerse it in water, as it is not waterproof (unlike an original).