Years back, this watch was mine for one week and I returned it to the vendor.
At that time, I was under the incorrect assumption that the caliber 3313 was not up to the Omega standards.
Time passes, learned more and, good news, the watch continued with on the vendor's hands.
Got it, months back, and I sent it to my watchmaker to be verified and I forgot.
One month back, I was at my watchmaker and he asked if I was not getting my watch, that was in perfect state, COSC etc.
I'm wearing it as a work watch and I could not be more happy.
Two quick iPhone shots of my Omega DeVille Coaxial Chronograph Chronometer.
I need to take more pictures and, maybe, to put a brown strap on it (Brown is the new black, IMHO).
Here is the beauty:

