For me this is the most interesting and collectable PC from Patek in the past more than a decade. Very understated yet highly attractive watch. When we prefer a thin Patek movement to a bulky Lange movement, we have to be ready to accept that not all functions (like instant date jumping, hacking second, etc.) can be realised. I strongly prefer a thinner and more elegant movement, thus these technical details for me are much less important than the movement bridge layout, finish, accuracy, durability and repairability).