I think this has been debated many times and there is no definitive answer. If any watch was to end up with a Pre Pro dial then it would be the double beveled 105.012. Enough have come to light for me not to dismiss them out of hand. The parts bins at Omega seem to have had a few nooks and crannies where the wrong parts get mixed up. As both the Ed White and this watch were in production at the same time it seems entirely possible that a transition could occur.
Except there is absolutely no evidence for this. It is possible but improbable.
Swiss manufacturing, and procedures, in my experience, are painfully precise and proscribed. if the book says "that goes with that" then that is it. So I do find it hard to think that the factory was so slapdash it put dials intended for one reference in another. While I hear many apocryphal stories regarding a non pro dial in a asymmetric case, no-one has ever offered any concrete evidence that this happened from the factory. No one has yet even produced a one owner watch, with a non pro dial in a asymmetric case - with a solid history and chain of ownership.
We also have no evidence, (do we?) of Omega manufacturing out of specification watches.
The watches with incorrect dials I have seen, have had serials all over the place, and without an extract. I personally bought one years ago, a 105.012 with a non pro dial, and when I asked for an extract it came back 105.003. I think this is by far the most common explanation.
I have also seen it the other way around. In all cases, there has been a break in history and provenance. Some have simply been cobbled together by sellers, and others have been through watchmakers in the 1970's where, as I was told, "We serviced speedmasters all at once. We did not care which back went on which watch. Back then it didn't mater". (I actually bought two speedmasters from him!).
So yes, it has been debated, but as yet I have seen absolutely no evidence that the factory put non pro dials in an asymmetric case, but I have seen more than one 105.003 movement and dial in an Asymmetric case.
Now I am happy to be proved wrong on all this, by some non pro dials in asymmetric cases coming to light with a legitimate history and provenance. Until then, I regard them as incorrect.
