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The Datograph Perpetual was first introduced in 2006. And as the name suggest, the Datograph Perpetual combines Lange’s iconic Datograph with a perpetual calendar complication. It is 1.5mm bigger than the standard Datograph at 41mm with 13.5mm thick case.
This 18K White Gold version was produced for a short period of time and has a grey dial color that gives it a better contrast and a more contemporary look.
The dial is clearly derived from the original Datograph with a tachymeter on the outside, big date indicator at 12, applied II, VI and X indexes. With added day of the week and day/night indicator on the second counter at 9, month and leap year indicator on the chronograph minute counter at 3 as well as the moon phase indicator at 6.
Powered by the Cal. 952.1 with a staggering 556 parts with spectacular architecture and finish. It has a 36-hour power reserve and has a safety feature on the date corrector pusher at 10. The pusher is deactivated between 10 PM and 2 AM and can only be operated if the crown is pulled out.