This year marks the 25th anniversary of the A. Lange and Söhne Lange 1 timepiece so the German watchmaker is releasing a limited number of commemorative editions. There are Just 25 examples of the Lange 1 Tourbillon Perpetual Calendar “25th Anniversary,” available in white-gold with blued-steel hands.
This timepiece attracts considerable attention due to its distinctive configuration. A rotating peripheral ring indicates the month as a retrograde day-of-week display takes the place of a power-reserve indicator. The leap year is shown in a small aperture at 6 o’clock. The moon-phase display is calculated to an accuracy of 122.6 years and includes a hand-engraved lunar disc in white gold visible through an opening on the seconds subdial. A single glance delivers all of the information at once.
The automatic calibre L082.1 features an outer mass of platinum; its middle segment is embossed with A. Lange & Söhne signature 21-carat gold. The Lange-typical quality of the 624-part movement includes the black polish on the upper side of the tourbillon cage and a diamond endstone bearing that holds the tourbillon. The power reserve is up to 50 hours.
The shades of blue presented on the dial range from thermally blued-steel hands to all inscriptions, including the numerals of the outsize date and the alligator leather strap with a white gold buckle. The caseback is engraved with a picture of the original A. Lange and Söhne’s building which was destroyed during a bombing in WWII.
The number 25 presented above the engraving not only refers to the anniversary but also a unique detail of the original Lange 1 launch. It took place on October 24 1994. On this day, the date of the debut watches was set to the 25th so they would be current when showcased in the following day’s newspapers.