A quick google search: Omega DeVille Co-Axial Chronometer will answer all your questions.
I did it but i want to know if it's a true one before buy it because I don't see the exact same on google with the 3 numbers on the right. Thanks for your help
Thanks for your help, just for my information how you can see that
Cheap materials and finishing, looks nothing like any real Omega model, has a 24 hour scale on the dial but no GMT hand, just bad all around. Locking thread since it has been answered.