That statement is yet to be confirmed, I would have thought over the years more would have cropped up so nobody can say it is correct or incorrect as yet can they?
The best bit is nobody really knows 100%, we can have discussions, ideas or theories but when you believe you know the answer without a time machine I think it takes away the excitement, joy and discussion.
Nobody is an expert when it comes to watches, that is the only truth everyone should know. I have seen “experts” proven wrong, but they never come back and admit it, they take themselves far to seriously for that.
Omega themselves, the manufacturer does not know the full history of their own products either.