@Deltasig1218
The "discrepancy" you've mentioned is not at all indicative of a fake, it's way too premature to reach that conclusion. We'd need to see the extract plus detailed macro shots of the watch (dial, case, movement) to offer that judgement. Also, I think it's misleading to say (or think) that Omega would "switch some parts," rather, it was common practice to use all available parts when manufacturing watches during this time period. Rolex, too, used all sorts of available parts that chronologically seem to be in conflict, but in actuality are 100% original to the watch, as it left the factory.
Lastly, CB are cases are a bit more desirable than HF cases.
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