The Swiss manufacturer extended its Portuguese Perpetual Calendar series with three gorgeous models. While the version in platinum has been already sold out, you can still choose between two remaining models: the 18-karat white gold one and the 18-karat red gold version.
The updated Portuguese Perpetual Calendar Double Moonphase Watch features the same complex functionality like the previous range with the reference IW5023. As we used to Perpetual Calendar timepieces, it shows the date, day, month and year in four digits, and it also indicates the number of days remaining until the next full moon.
The moonphase indicator at the 12 o’clock position which shows its course and features the mirror images of the moon in the northern and the southern hemispheres deviates from the moon’s actual progress by just 12 seconds in each lunar period. In other words, it delivers perpetual calendar accuracy with the deviation of just one day every 577.5 years, which is quite amazing.
The Powerful In-house Made Caliber 51614
This exceptional wristwatch is equipped with the IWC-manufactured Caliber 51614 mechanical movement with Pellaton automatic winding system and a seven day power reserve. The imposing movement is built on 62 jewels and beats at 21,600 vibrations per hour. The mechanical perpetual calendar takes into account every leap day in the Gregorian calendar and requires only one adjustment at the end of February in 2100. For instance, the same movement has been incorporated in Big Pilots Watch Perpetual Calendar Edition Antoine de Saint-Exupéry.
A Desirable Timepiece Able to Match the Precision of Scientific Instruments
IWC Portuguese Perpetual Calendar is presented in a large-sized case with the diameter of 44.2 mm and the thickness of 15.5 mm. The watch case is domed on both sides by convex sapphire crystals with antireflective coatings and it is constructed to resist water pressure up to 30 meters (100 feet). The case incorporates a fixed bezel and on the right side, there is a screw-in crown. All aficionados of mechanical timepieces will be unable to resist the temptation to cast a glance through the transparent sapphire-glass case back.
An ardoise gray or blue dial features four sub-dials and even two of them provide double functionality. A power reserve indicator and a date display share the same counter which is situated at the 3 o’clock position. There are two sub-dial hands: the shorter one is used for the power reserve, while the longer one shows the right date. A day display and a small hacking seconds counter are combined in a single totalizer placed at the 9 o’clock position. A shorter hand shows seconds, whereas the longer one indicates the right day of the week. The sub-dial situated at the 6 o’clock position displays a month, and as I have already mentioned, the moonphase indicator is situated at the 12 o’clock position. The year in four digits is available in a small aperture located between 7 and 8 o’clock positions.
There are two available variants of this IWC’s timepiece. The first one with the referent number IW503202 is crafted from 18-karat red gold and features an ardoise gray dial with red gold appliqués. This model is attached to an elegant dark brown alligator leather strap, terminating in a folding clasp in red gold and it comes with the retail price of $36,000. In my opinion, the more attractive model IW503203 boasts an 18-karat white gold case and a striking midnight blue dial which serves as a perfect background for the hands, Arabic numerals and indices also crafted from white gold.
This exquisite Portuguese is secured to the wearer’s wrist with an extremely fashionable black alligator leather strap, ending in a white gold folding clasp. The eye-catching Perpetual Calendar which perfectly combines blue, silver and black is a little bit more expensive and it can be purchased for $41,700.