Automatic Perpetual Calendar Retrograde Date & Dual Time Zone

Whereas perpetual calendars are generally combined with moon phases, Bovet has chosen to associate it with a dual time-zone display. The black or white enamelled dial displays the day, the month and the leap-year cycle in windows surrounded by an arching retrograde calendar scale. The dual time zone appears at 6 o’clock. Pink or white gold case and lugs, depending on the model.
Watch type: Complicated Mechanical
Watch year: 2006