This timepiece was followed by several other models that included a range of additional complications. Then in 2012, the perpetual calendar made another appearance in the Lange 1 Tourbillon Perpetual Calendar, which presented the various perpetual calendar indications in the iconic Lange 1 off-center dial design. This year the perpetual calendar is back in the Lange 1, but this time without a tourbillon, so it can shine all on its own. What’s new in this timepiece is the addition of a day/night indication. “People will surely look at our new perpetual calendar and say, they forgot the day/night indication because you can’t see it on the dial”, shares A. Lange & Söhne CEO Wilhelm Schmid. “But then you realize that we used the Lange 1 moon phase indication, which gives a nice change to the dial throughout the day. In the daytime, the sky behind the moon is light blue, and when it gets dark it becomes dark blue.” The Lange 1 Perpetual Calendar is available in pink gold with a gray solid silver dial or in a limited edition of 150 pieces in white gold with a solid pink gold dial.
Lange 1 Perpetual Calendar
Case: 18K pink or white gold with a sapphire crystal caseback
Diametre: 41.90 x 12.10mm MOVEMENT: Manufacture self-winding Caliber L.021.3 with a 50h power reserve
Functions: time indicated in hours, minutes, and subsidiary seconds; perpetual calendar with precise jumping displays for the outsize date, day of the week, month, leap year; and moonphase display with integrated day/night indicator
Dial: grey solid silver or solid pink gold
Strap: red/brown leather with folding clasp
