A. Lange & Söhne surprised many earlier this summer when it introduced new colors to two of its best-known complicated models.
The Glashütte-based manufacturer applied a platinum case to its famed Lange 1 Time Zone while also adding a stunning pink gold dial to its 1815 Rattrapante Perpetual Calendar in a white gold case.
Here, we’ll look at the latter model with its visually transformative new dial hue.
The 1815 Rattrapante Perpetual Calendar’s dimensions, movement and technical details remain as impressive they were when the piece debuted ten years ago when it won the Grand Complications award at the 2013 Grand Prix d’Horlogerie in Geneva.
We’ve seen the dial color and case metal combination here previously when the watchmaker offered the design on its Datograph Perpetual Tourbillon (2019) and its Lange 1 Perpetual Calendar (2021).
The look is almost vintage, especially when eyeing the dial’s very traditional railway minute scale and its classical four-subdial layout. 
And this make perfect sense since A. Lange & Söhne designers meant to recall the dials of earlier Lange pocket watches. Thus, we see the combined calendar at the 3 o’clock and 9 o’clock positions while the left subsidiary dial shows the date and day of the week and the right displays the month and leap year.
At the same time, we see the expressive moon phase display within the subsidiary seconds display at 6 o’clock and the minute counter and power-reserve indicator at the top of the dial. 
The beautiful display continues on the back of the watch with a clear view of the watchmaker’s spectacular manual-wind L101.1 movement with its clearly visible rattrapante mechanism and superior finishing. Stunning.
A.Lange & Sohne will make 100 examples of the new 1815 Rattrapante Perpetual Calendar.
Price on Request.
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