Moon-phase display A disc that rotates under the dial and is visible through an aperture. It shows the moon phases from full to new, generally as seen from the Northern Hemisphere.
With this watch - it has a | moon-phase display computed to remain accurate for 1000 years - Lange pays tribute to one of the most creative members of the dynasty: Emil Lange. The edition of the 1815 MOONPHASE was limited to 150 watches in platinum and 250 in pink gold.