platinum, this classically beautiful perpetual calendar timepiece displays day of the week, date, month, leap year, and phases of the moon. Visible through the sapphire caseback is the complex L922.1 SAX-0-MAT movement, with its 478 hand finished components, three-quarter gold and platinum rotor, and stunning ribbed finish. As remarkable as its visual beauty, this exemplar of the watchmaker's art offers equally brilliant Lange technical elements, which include the innovative Zero Reset mechanism and outsize date display, as well as a continuously running moonphase indicator that will operate for 122.6 years before showing a single day of error from actual lunar behavior. All indications on the Langematik-Perpetual are presented harmoniously and logically upon an impeccably elegant solid silver dial adorned with gold appliques.