The Basics

The IWC Portugieser Perpetual Calendar 5023 was introduced in 2010, pairing IWC’s self-winding 7-day movement with Kurt Klaus’ ingenious perpetual calendar module. The latter was first seen in the 1985 Da Vinci and adapted to fit the larger dimensions of the 7-day movement. It featured a case of 42.2mm with sapphire glasses both front and back. One of its signature elements was the ‘Single Moon’ moonphase display, allowing its owner to read the moonphase in its hemisphere. This reference, the IW5023-08, features a stainless steel case with black dial. It was introduced in 2014.

Brand: IWC
Family: Portugieser
Reference: IW5023-08
Name: Portugieser Perpetual Calendar 5023 Stainless Steel / Silver
Produced: 2014 – 2014
Limited: Yes, 500 units

Below is a detailed look at IWC’s model IW5023-08 from Portugieser watch family, including the price, case details and movement features.

IWC Portugieser IW5023-08

The Details

IWC’s Portugieser Perpetual Calendar 5023 Stainless Steel / Silver (IW5023-08) was originally released in 2014 – 2014. This watch features a automatic movement beating at a frequency of 21600 bph ( 3 Hz) to provide a 168-hour power reserve when fully wound.

The Case

The stainless steel case measures 44.2mm in diameter and roughly 15.5mm thick, with 22mm lug width. The round case is paired with a silver color dial with feuille-shaped hands, and a arabic numerals hour markers and minute track, covered by a sapphire glass. IWC’s Portugieser model IW5023-08 is water resistant up to 30 meters (98 ft). A display caseback is over the back of the watch case.

Material: Stainless steel
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 44.2mm
Height: 15.5mm
Lug Width: 22mm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Portugieser IW5023-08 movement is a powered by caliber 51613 made by IWC. The 62-jewel automatic movement is 38.2mm in diameter. Its balance wheel oscillates at 21,600 semi-oscillations per hour or 3 Hz. This movement offers a 168-hour power reserve.

Type: Automatic
Brand: IWC
Caliber: 51613
Base: IWC 51610
Display: Analog
Diameter: 38.2mm
Jewels: 62
Reserve: 168 hours
Frequency: 21600 bph
Time: Hours, Minutes, Small Seconds
Additionals: Power Reserve Indicator

The Price

How much does the IWC’s Portugieser IW5023-08 cost? This watch was introduced in 2014 and has been in IWC’s collection for around . This watch is a limited edition with just 500 pieces released. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available

For more information, visit IWC online.


  • Brand: IWC
  • Model: Portugieser Perpetual Calendar 5023 Stainless Steel / Silver
  • Reference Number: IW5023-08
  • Limited: Yes, 500 units

Case & Dial:

  • Material: Stainless steel
  • Glass: Sapphire
  • Back: Display
  • Diameter: 44.2
  • Thickness: 15.5
  • Lug Width: 22
  • Dial Color: Silver
  • Indexes: Arabic Numerals and Feuille-shaped hands
  • Water Resistance: 30 meters


  • Winding: Automatic
  • Brand: IWC
  • Caliber: 51613
  • Display: Analog
  • Diameter: 38.2mm
  • Jewels: 62
  • Power Reserve: 168 hours
  • Frequency: 21600 bph
  • Functions: Hours, Minutes, Small Seconds

About IWC

IWC logo

IWC is based in Schaffhausen, Switzerland, and was founded in 1868. Its signature lines are the Pilot’s Watches and the Portugieser, while other famous collections are the Aquatimer, Portofino and the Da Vinci. Many of IWC’s designs display a industrial type of beauty not often found in Swiss watchmaking. The same goes for its movements; while of very high standards, they are finished with an … engineers touch rather than that of an artist. One could very well say that IWC’s approach to watchmaking is more German in nature compared to many of its competitors; the ‘form follows function’ adagio is one held in high esteem in Schaffhausen. Notable watches and innovations created by IWC in the past include the digital ‘Pallweber’ pocket watch, the late 1930’s Portugieser, the 1985 Da Vinci with Kurt Klaus perpetual module, the split-seconds mechanism as designed by Richard Habring and the ceramic Da Vinci and Flieger 3705 – introduced many years before the material became fashionable. IWC also pioneered the use of titanium in wristwatches. In recent years, IWC has had a strong focus on in-house movements with prices rising accordingly. IWC is part of the Richemont group.

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