#watchcomplications

#Repost @bucherer with @make_repost ・・・ The Perpetual Calendar: The king of mechanical calendars. The smart mechanical program automatically recognises the different lengths of the months – even during leap years. Because of this, the calendar only needs a small adjustment in centurial years that skip the leap year, which is the case in 2100, 2200 and in 2300. The iconic @iwcwatches Portugieser Perpetual Calendar not only features this complication, but also a moonphase display that diverges by just 1 day in 577.5 years. #Bucherer #BuchererWatches #BucherersPick #WatchComplications #IWCSchaffhausen #IWCPortugieser #PerpetualCalendar https://www.instagram.com/p/CVrYKT1Krmk/?utm_medium=tumblr