




They came out from the Manufacture.
I remember several GMTs ( I've seen in the flesh several 16750 sold 5 ( yes, 5 ) years after the date Chronometry paper. Same for GMTs, the record to be broken was a Milgauss, with a serial number dating it from 1970, sold 15 years after!
Same for Subs, which were commonly sold 2, 3, 4 years after.
So, I am not sure this is a criteria.
Best, my friend.
Nicolas