Watch Facts

Quiz: 2023.10.25 Quiz (Perpetual Calendar)

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Vacheron Constantin Traditionelle Twin Beat (2019)
  • 42mm case in platinum.
  • As the name suggest; the watch features a patent pending design utilizing a dual frequencies system.
  • At the push of a button, it can switch from 5hz (regular) beat for normal operation; or 1.2hz (using silicium escapement) for extended storage operation at 65 days power reserve.
  • If you leave it at 5Hz, power reserve is 4 days.
  • The watch is a perpetual calendar with Instantaneous jump (patent pending), Caliber 3610 QP is an integrated perpetual calendar movement; which allows user to adjust the date at any time without the need to observe the safety zone.
  • Black coating bridges NAC treated (provides better resistance to corrosion) Limited production.
  • Priced at 225000€
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Piaget Polo Perpetual Calendar Ultra-Thin (2023)
  • Stainless steel case in 42mm with a thickness of 8.65mm.
  • Dark emerald green dial, luminescent indexes.
  • Featuring the newest quick release bracelet system which Piaget calls it SingleTouch system.
  • Automatic movement with the in-house Caliber 1255 which is a 1200 based.
  • Blued micro-rotor winding.
  • Power reserve is 42hrs.
  • Priced at €60500
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Patek Philippe 5013P (1990s)

This minute repeater with retrograde date, perpetual calendar. 5013 started in 1992, caliber R29PS-QR an automatic movement with 515 parts. In 2011, the 5013 production was ceased. Cal. R. 27 PS, circular automatic nickel lever movement stamped with the seal of Geneva, 41 jewels, 22k gold micro-rotor, minute repeating on two gongs. Applied Breguet numerals, apertures for day, leap year indication and month, fan-form aperture for moon-phases combined with subsidiary seconds, retrograde sector for date

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Panerai Luminor Perpetual Calendar Platinumtech PAM00715 (2021)
  • Platinumtech case – proprietary 950 platinum alloy in 44mm.
  • Automatic in house calibre P.4100 with micro-rotor.
  • Power reserve is 72hrs.
  • Priced at 66,000€
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Moser Endeavour Concept perpetual calendar (2016)

This is perhaps the most elegant perpetual calendar I can think of. The large aperture at 3 o’clock is the date. The up/down at 9 o’clock is a power reserve. The small arrow hand pointing to an hour is the month. To keep the dial clean, the watch doesn’t tell you the day of the week. However, being a perpetual calendar, it must be able to see the the leap year indicator on the watch and to maintain the spirit of keeping the watch clean and elegant, the leap year indication is hidden away on movement side of the watch. The watch is adjusted via simply only thru the crown, and it can be adjusted forward or backward (unlike many other perpetual on the market which can only be adjusted forward), leap year is adjusted by the corrector on the side of the case at 9 o’clock. The date indicator is a large date display with two discs overlapping each other; and it is an instantaneous jumping display. (Currently showing October 5th) This Concept is only limited to 10pc, platinum case and priced at 69,000CHF

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MB&F Legacy Machine Perpetual in Titanium (2018)

The case is in grade 5 titanium, that can be mirror polished; in 44mm. The movement for the MB&F LM Perpetual Titanium was developed in-house as an integrated perpetual calendar by Stephen McDonnell. The manual wound movement composed of 581 parts, is composed of double mainspring barrels, unique 14 mm balance wheel with traditional regulating screws visible on top of the movement, internal bevel angles, Geneva stripes, 41 jewels and handmade engravings. The movement has a frequency of 18,000 vph, with a 3-day power reserve. Limited to 50 pieces. Priced at US$148,000.00

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Jaeger-LeCoultre Reverso Hybris Mechanica Calibre 185 Quadriptyque (2021)
  • Case is in 18k white gold at 51.2mm height x 31mm width x 15.5mm thickness.
  • For the first time, the Reverso featuring all 4 sides of the case with displays:
    • Side 1: Hour and Minute, Tourbillon (indicating the Second), Instantaneous Perpetual Calendar, Grande Date, Day, Month, Leap Year, Night & Day.
    • Side 2: Jumping Digital Hour, Minute, Minute Repeater.
    • Side 3: Northern Hemisphere Moon Phase, Draconic Lunar Cycle (height of the moon), Anomalistic Lunar Cycle (apogee and perigee), Month, Year.
    • Side 4: Southern Hemisphere Moon Phase.
  • The Triptyque with 3 sides display came out in 2006 and had a massive case 55 X 37.7mmwith a thickness of 17.9mm; making this new Quadriptyque very wearable.
  • While most people paid full attention to the amazing complicated movement; I find it very refreshing that JLC had paid extra attention to the construction of the double déployant buckle; giving it very fine adjustability.
  • Manual winding Calibre 185, tourbillon, minute repeater, perpetual calendar and astronomic watch.
  • Power reserve is 50hrs Limited to 10pcs.
  • Priced at €1.35 million
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IWC Portugieser Perpetual Calendar (2015)

44.2mm case with display caseback, perpetual calendar, moonphase, 7 days power reserve. Automatic 52615 caliber, hacking seconds, bi-directional winding. Priced at US$46,000.00

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Frédérique Constant Perpetual Calendar (2016)

A perpetual calendar can recognise leap year, different days in a month and hence you don’t need to set the watch if you keep it running.  Stainless case in 42mm with a thickness of 10.2mm.  Automatic in house FC755 calibre, with moonphase, power reserve is 38 hours.  Priced at USD 9000

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DeBethune DB17 Perpetual Calendar (2005)

18k rose gold case in 43mm with a thickness of 12mm. Manual winding movement DB2004, using the inhouse patented 4 spoke titanium balance with platinum weights. Perpetual calendar with astronomical moonphase. Power reserve is 5 days. Several technical aspects make this a very interesting watch to collect; first of all a legible perpetual calendar is something not talked about more often enough. Many perpetual calendar on the market are simply impossible to read; this DB17 is very legible with a simplistic approach in dial design. Secondly, the moonphase is not only incredible because of its Astronomical Moonphase ability (meaning its accurate up to 122 years), but also it is a spherical moon, adding even more uniqueness to the watch. Produced in very small quantity in the early days of the brands’ launch.

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