Germanuber watchmaker A. Lange Sohne has just released a new version of its mega Datograph Perpetual Tourbillon watch. The first version, in platinum and with a black dial as we saw hands-on here, was released in 2016. It was a limited edition of 100, and it was snapped up quickly by well-heeled Lange connoisseurs who wanted, what many regarded to be, the ultimate expression of the Datograph. Fortunately, if you missed out on that one, the brand now has a new A. Lange Sohne Datograph Perpetual Tourbillon version in white gold and with a pink gold dial, once again limited to 100 watches.SpecificationsBrand: A. Lange SohneModel: Datograph Perpetual TourbillonDimensions: 41.5mm diameter; 14.6mm heightCase Material: White goldCrystal/Lens: SapphireMovement: Caliber L952.2Frequency: 2.5HzPower Reserve: 50 hoursStrap/Bracelet: Hand-stitched dark brown alligatorPrice Availability: Limited to 100 pieces AnalysisWe always knew the Datograph Perpetual Tourbillon would be back. What we didnt know was when and in what form. Now we do. What to make of this, then?The case dimensions and dial layout are unchanged, so lets begin by considering its technicalities. This is essentially a Datograph with a perpetual calendar and a tourbillon. In other words, its a flyback chronograph with a jumping minute counter, an oversized date, a perpetual calendar, and a moon phase display that is accurate to 122.6 years-as well as a tourbillon that makes a revolution every minute. The impressive thing is that it is all integrated-no modular nonsense here. This is A. Lange Sohne, and they do things the proper way. Also, the movement architecture is bonkers and it is immaculately finished.The dial layout was perfect the first time around, so theres no need to make any changes. Despite the wealth of information that it displays, the dial is actually quite clean, sensible, and legible. More importantly, there is a symmetry and harmony to everything. However, Im not sure the decision to go with pink gold is going to go down well with the Lange faithful. From the press photos at least, it looks like salmon, and traditionally, salmon dials have been associated with Pateks more than Langes. But, Im going to reserve my final judgment until I see photos of it in the flesh. For now, consider me skeptical. SummaryThis is Langes love letter to its most moneyed collectors. Its technicalities cannot be faulted but the choice of a pink gold dial does raise some questions. Even if it doesnt come off as salmon, there is the suspicion that it might be a little loud, and that I think goes against the philosophy of the watch. The Datograph Perpetual Tourbillon should be an understated watch, why else would they conceal the tourbillon and make it visible only from the rear? Personally, I find the platinum version with the black dial to be more aesthetically pleasing and coherent. Still, Im sure this watch will find its fans. The new A. Lange Sohne Datograph Perpetual Tourbillon in white gold and with a rose gold dial is limited to 100 pieces and we will update with prices when they are disclosed. Learn more atFollow our pre-, post-, and live SIHH 2019 coverage here and on social media. [...]