I think the most likely thing is that they are copying those watch from a mix of pictures that aren't all from the same period. Doubt they have ONE watch in mind and just mix and match as a result.
Patek also mix and match parts. Impossible to define, without doubt, what is correct.
Plus it would make sense for the factories to simply get a gen especially If they’re going to the effort to copy the movement. Solid investment. They’ll make back the cash in the first week of release. So many used gens available.
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