By Martin Green Lange & Söhne is one of those brands that knows that it pays to be patient. With a loyal base of knowledgeable watch connoisseurs as their main clients, they can probably sell out each year a new addition to their “Pour le Mérite” collection. Yet, they don't. In fact, the new Tourbograph Perpetual is only the fifth watch to be part of this exclusive collection since it was first launched in 1994. Back then it was the very first wristwatch to feature a fusée-and-chain transmission, something that we can also find in the new Tourbograph Perpetual.