IWC Schaffhausen Portugieser Perpetual Calendar Boutique Edition in 18-carat Armor Gold® (Ref. IW503312)

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IWC Schaffhausen presents a boutique edition of the iconic 44-millimetre Portugieser Perpetual Calendar in 18-carat Armor Gold.

The classic Portugieser Perpetual Calendar (Ref. 5033) with a 44-millimetre diameter displays the calendar information on four subdials. In addition to the displays for the date, day, month and moon phase, it features a four-digit year display, small seconds and a power reserve display. Newly available is a Boutique Edition with maritime-inspired design cues, an 18-carat Armor Gold® case, a blue dial and a blue alligator leather strap by Santoni.

IWC Schaffhausen Portugieser Perpetual Calendar Ref. IW503312 Boutique Edition: 18-carat Armor Gold® case, blue dial, gold-plated hands, 18-carat gold appliques, blue alligator leather strap by Santoni.
IWC Schaffhausen Portugieser Perpetual Calendar Ref. IW503312 Boutique Edition: 18-carat Armor Gold® case, blue dial, gold-plated hands, 18-carat gold appliques, blue alligator leather strap by Santoni.

The timepiece is powered by the IWC-manufactured 52610 calibre, which features a bidirectional Pellaton winding system ftted with components made of virtually wear-free zirconium oxide ceramic. Two barrels build up a power reserve of seven days.

IWC Schaffhausen Portugieser Perpetual Calendar “Boutique Edition” in 18-carat Armor Gold® (Ref. IW503312) caseback

Back in the 1980s, IWC’s legendary watchmaker Kurt Klaus designed a perpetual calendar that comprised only about 80 individual parts. The complication premiered in the Da Vinci Perpetual Calendar (Ref. 3750) of 1985. For the first time, a perpetual calendar had a four-digit year display and a perpetual moon-phase display. A further attractive new feature was its high user-friendliness. All displays are perfectly synchronised and, if the watch has not been worn for some time, are easily advanced using only the crown.

In 2003 the perpetual calendar appeared in the Portugieser family for the first time. The calendar module has been continuously improved over the years. It will require a correction only in 2100 because, due to a quirk of the Gregorian calendar, the leap year that would normally occur then, will be omitted.

Technical details

Model: IWC Portugieser Perpetual Calendar Boutique Edition in Armor Gold Ref. IW503312

Functions
Power reserve display
Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase
Small hacking seconds

Movement
IWC manufacture calibre 52610
Mechanical movement
Pellaton automatic winding system
Frequency: 28,800 vph/4 Hz
Jewels: 54
Power reserve: 7 days (168 h)
Winding: Automatic
18-carat gold oscillating weight

Case, dial and strap
18-carat Armor Gold® case
Blue dial, gold-plated hands, 18-carat gold appliqués
Blue alligator leather strap by Santoni
Glass Sapphire, arched edge, antireflective coating on both sides
Water-resistant: 3 bar
Diameter: 44.2 mm
Height: 14.9 mm
See-through sapphire glass back