The temperament of Karl Lagerfeld was very cool and distinctive and the clothes he wore are always with black-white tone. In addition, the wristwatch he wore also attracted the public. According to the photos data, the watches he wore were including Patek Philippe, Audemars Piguet, Rolex, Apple watch and so on.
In my opinion, the wristwatch that perfectly presented his taste must be the Audemars Piguet Royal Oak copy with black dial. There were two features of this timepiece: Firstly, it was belonging to the earliest Series of Royal Oak, which could be considered as the original Royal Oak. Many watch lovers know that at the time when Royal Oak launched, it was unanimously spurned by the watchmaking industry. But Karl Lagerfeld chose it and usually wore it.
Secondly, the case and bracelet had been coated with black PVD. As everyone knows, Audemars Piguet never released such an all-black version. Then this black PVD-coated steel case fake Audemars Piguet became a mystery. We speculate that it was modified by Karl Lagerfeld himself.