I recently bought a new 5170G from a European authorized dealer (one of the last available). A Patek-trained watchmaker working at Wempe in NYC examined the watch and found some flaws in the factory finish of the watch case—vertical distortions on the side of the case near the 7 o’clock lug. I would not have noticed these on my own but now I can’t unsee them. I can’t capture the flaw in photos, unfortunately.