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The IWC Portugieser Buying Guide: Every Modern Reference, the Eternal Calendar, and What the Pre-Owned Market Actually Charges

The complete 2026 IWC Portugieser buying guide. Every modern reference decoded with retail and secondary market pricing: the Portugieser Automatic 40 and the new 42, the Chronograph IW371617 with steel bracelet, the 2026 Chronograph Ceratanium, the Hand-Wound Eight Days, the Yacht Club Chronograph, the Perpetual Calendar, the Aiguille d'Or-winning Eternal Calendar, plus vintage references and the Sidérale Scafusia tourbillon flagship.

By Sean May, Founder & Watch Consultant
May 30, 2026
16 min read
The IWC Portugieser Buying Guide: Every Modern Reference, the Eternal Calendar, and What the Pre-Owned Market Actually Charges

The IWC Portugieser is one of the most recognized dress watches in modern Swiss watchmaking and one of the most quietly varied. The current catalog spans a $9,500 entry steel automatic up to a $152,000 platinum secular perpetual calendar, with chronographs, hand-wound eight-day references, yacht club sport variants, and limited editions filling every gap in between.

This guide covers every modern Portugieser reference worth knowing, current pricing, what the secondary market actually charges, and which configuration makes sense for which buyer.

All images in this post are AI-generated and may not perfectly represent the actual watch references discussed. They are intended for illustration only.

The Short Answer

If you want one Portugieser and you do not know which, the answer is almost always the Portugieser Automatic 40 in steel (IW358303 or IW358304) at roughly $9,500-$10,000 retail or $6,500-$7,500 pre-owned.

It is the watch that holds the cleanest connection to the 1939 Reference 325 that started the line, it wears the most comfortably, and it carries the least technical risk on the secondary market.

The other 130-plus references exist for specific reasons. Buyers chase them when they need a chronograph, a calendar complication, or a different size profile.

The Portugieser in 90 Seconds

The Portugieser traces back to 1939, when two Portuguese merchants asked IWC to build a wristwatch with the precision of a marine chronometer. IWC's answer was the Reference 325, a 41.5mm wristwatch using a 74-calibre pocket watch movement.

That brief produced the design language the line has kept for 85 years: a large round case for the period, applied Arabic numerals, slim leaf hands, a railroad minute track, and a small seconds sub-dial at 6.

Production was tiny and intermittent through the 1940s and 1950s. The line went dormant. IWC revived the Portuguese-style design with the Jubilee Edition Reference IW3531 in 1993, then expanded steadily through the 2000s and 2010s into the broad catalog buyers see today.

The naming has shifted between "Portuguese" and "Portugieser" over the years. IWC settled on Portugieser as the canonical international name in 2015.

The Modern Portugieser Lineup at a Glance

Reference family Size Movement Power reserve Retail (steel)
Automatic 40 40.4mm Cal. 82200 60h ~$9,500
Automatic 42 42.3mm Cal. 52011 168h (7 days) ~$13,500
Chronograph (IW371617) 41mm Cal. 69355 46h ~$8,750-9,500
Chronograph Ceratanium (2026) 41mm Cal. 69355 46h ~$11,500
Hand-Wound Eight Days 43mm Cal. 59210 192h (8 days) ~$17,000-22,000
Yacht Club Chronograph 44.6mm Cal. 89361 68h ~$14,500
Perpetual Calendar 44mm Cal. 52610 168h ~$42,000+ (gold)
Eternal Calendar 44.4mm Cal. 52640 168h ~$152,000 (platinum)

Pricing reflects current US retail from IWC and authorized dealers as of May 2026. Secondary market pricing for each reference is covered in detail below.

Portugieser Automatic 40

IWC Portugieser Automatic 40 reference IW358303 in stainless steel with silver dial, applied polished Arabic numerals and small seconds at 6 The Portugieser Automatic 40 IW358303. The cleanest, most accessible entry point in the line, and the reference closest in spirit to the 1939 original.

The Portugieser Automatic 40 launched in 2020 as the brand's effort to bring the Portuguese-style design back into modern wrist proportions. The earlier Portugieser Automatic had been 42.3mm and 14.2mm thick, which was great in 2000 but felt heavy by the 2020s.

A 2024 refresh slimmed the case to 12.4mm thick, added double box-glass sapphire crystals on both sides, and introduced new dial colors including Horizon Blue, Obsidian, and Dune. The dial finishing uses 15 layers of transparent lacquer, one of the more elaborate processes in the catalog.

Reference breakdown

Ref Case Dial
IW358303 Stainless steel Silver
IW358304 Stainless steel Horizon Blue
IW358305 Stainless steel Obsidian
IW358306 Stainless steel Dune
IW358312 Stainless steel Silver, blue hands and indices
IW358404 18k 5N gold Silver
IW358308 18k 5N gold Dune

What's actually inside

The calibre 82200 is an IWC manufacture movement with a 60-hour power reserve and the brand's signature Pellaton winding system. Pellaton uses a cam mounted on the rotor axis that pushes pawls back and forth to wind the mainspring, which is highly efficient compared to standard reversing wheel systems.

The latest 82200 uses near-wear-free zirconium oxide ceramic components for the Pellaton pawls and the cam, which extends service intervals significantly.

Pre-owned reality

Pre-owned IW358303 in good condition trades around $6,500-$7,500 through specialist dealers. Earlier IW358304 examples from 2020-2022 (the original launch dial) trade around $6,200-$7,000.

The 18k gold IW358404 retails at approximately $17,500 and rarely surfaces pre-owned below $13,000. Demand for the gold variant is steady, the volume is small.

Portugieser Automatic 42

The 2024 Portugieser Automatic 42 brings the line back to its classically larger proportions and introduces a new dial layout the small-case Automatic 40 does not have.

IWC Portugieser Automatic 42 reference IW501704 with blue dial and steel bracelet worn on the wrist at a marble bar counter The Portugieser Automatic 42 IW501704 in blue with steel bracelet. The first Portugieser to receive an integrated steel bracelet option since the 1990s.

The Automatic 42 uses the calibre 52011, the same family that powers IWC's Big Pilot. That brings two real changes versus the Automatic 40: a 7-day power reserve (168 hours) and a distinct dial architecture with power reserve indicator at 3 o'clock, small seconds at 9, and date at 6.

The visual signature reads more like a Big Pilot than a classic Portugieser. Some collectors love it. Others find it busy. The line's strongest defenders argue this is actually closer to the 1939 Reference 325 in dial intent, which featured asymmetric layouts.

Reference breakdown

Ref Case Dial
IW501701 Stainless steel Silver
IW501702 Stainless steel Black
IW501705 Stainless steel Dune
IW501704 Stainless steel + steel bracelet Blue
IW500714 Stainless steel Burgundy
IW501707 18k red gold Obsidian
IW501708 18k red gold Silver
IW501709 Stainless steel Burgundy, Year of the Horse (500 pieces)

The IW501704 with the steel bracelet is the first Portugieser since the 1990s to ship on an integrated steel bracelet from the factory. Time and Tide flagged the steel and dune dial combinations as launch standouts.

Pre-owned reality

The Automatic 42 is too new to have a mature secondary market. Early IW501701 examples from 2024 trade around $11,000-$12,500 pre-owned versus a retail of about $13,500. Steel bracelet variants hold value better, typically $13,000-$14,500.

The Year of the Horse IW501709 (limited to 500 pieces) is the wildcard. Lunar New Year Portugieser editions have historically been slow movers post-launch but can settle into modest premiums two to three years out. We do not yet know where this one lands.

Portugieser Chronograph: The Bestseller

The Portugieser Chronograph (IW371xxx series) has been the line's volume reference since 1998. The case dimensions, dial layout, and overall proportions have barely changed in 27 years, which is unusual at IWC and tells you everything about how well the original design landed.

IWC Portugieser Chronograph reference IW371617 in stainless steel with silver dial blue numerals and steel bracelet on a walnut writing desk The Portugieser Chronograph IW371617 with the steel bracelet introduced in 2024. The silver dial with blue Arabic numerals is the line's most photographed variant.

The defining feature is the vertical bicompax layout: a 30-minute counter at 12 and a small seconds sub-dial at 6, both aligned on the dial's vertical axis. Most chronographs have horizontal layouts. This vertical reading is what makes a Portugieser Chronograph identifiable at distance.

The movement story

From 1998 through 2018, Portugieser Chronographs ran on modified Valjoux 7750 calibres, with IWC producing and assembling components in-house at Schaffhausen. The 7750 base is reliable and adds about 1mm of thickness because of the cam-actuated chronograph design.

In 2018, IWC introduced the calibre 69355, an in-house column-wheel chronograph movement using a vertical bicompax layout. The new movement entered the lineup with the Portugieser Chronograph Edition "150 Years" (Ref. IW371602) and has progressively replaced the 7750-based references across the catalog.

The 69355 has a 46-hour power reserve, 28,800 vph beat rate, 27 jewels, and a column wheel controlling chronograph engagement. It is a more refined movement than the 7750-based predecessor and is now the standard in most current production references.

Reference breakdown

Ref Case Dial Strap/bracelet
IW371601 Stainless steel Silver, gold numerals Alligator
IW371606 Stainless steel Black Alligator
IW371617 Stainless steel Silver, blue numerals Steel bracelet (2024)
IW371620 Stainless steel White, blue sub-dials Alligator
IW371638 Stainless steel Burgundy (Year of the Horse) Alligator
IW371480 18k 5N gold Silver Alligator

Pre-owned reality

The Portugieser Chronograph is one of the strongest pre-owned IWC values in the catalog. Modern 69355-powered IW371617 references trade around $5,500-$6,800 pre-owned, well below the $8,750 retail.

Earlier 7750-based references from the late 2000s and 2010s (Ref. IW371417, IW371445, IW371446) trade between $3,800 and $5,200 depending on condition and box and papers status. WatchCharts puts the IW371446 average at $4,333, which makes it one of the most accessible in-house-finished Swiss chronographs available on the secondary market.

If you want a Portugieser Chronograph and can live without the latest in-house movement, the older Valjoux-based references are genuine value. The 7750 base is a known quantity that any qualified watchmaker can service.

Portugieser Chronograph Ceratanium: The 2026 W&W Release

IWC's Watches and Wonders 2026 Portugieser release is the Chronograph Ceratanium Ref. IW371631, a 41mm all-black version of the classic chronograph in IWC's proprietary Ceratanium material.

Ceratanium is a titanium-based alloy fired in a kiln to develop a ceramic-like outer layer. The result is titanium's lightness with ceramic's scratch resistance, in a uniform matte dark finish. Luxury Bazaar's 2026 IWC roundup notes this is only IWC's second Ceratanium watch outside the Pilot's line, with the Aquatimer being the first.

Specs match the standard Portugieser Chronograph: 41mm case, calibre 69355, bicompax dial layout. The execution is all-black: black dial, black appliques, black hands, black rubber strap with Ceratanium pin buckle. The look is monochromatic and intentionally industrial.

Retail is approximately $11,500. This is a regular production reference, not a limited edition. Ceratanium pieces tend to trade at a modest premium over standard steel on the secondary market.

Portugieser Hand-Wound Eight Days

IWC Portugieser Hand-Wound Eight Days reference IW510205 in steel with silver dial, eight-day power reserve indicator at 9 o'clock, resting on antique leather books in a library The Portugieser Hand-Wound Eight Days IW510205. Manual wind, an eight-day reserve, and the cleanest Portugieser dial outside the Automatic 40.

The Hand-Wound Eight Days is the connoisseur's pick in the Portugieser line. 43mm case, manual-wind calibre 59210, eight-day power reserve, and a single power reserve indicator at 9 o'clock.

The dial is the cleanest in the line apart from the Automatic 40, with a small seconds sub-dial at 6 balanced by the power reserve indicator at 9 and nothing else. No date, no chronograph counters, no calendar work.

Most buyers who go this direction want the daily intimacy of a manual-wind movement and the visual restraint of the simple dial. The eight-day reserve means you can take it off Friday evening and pick it up Monday morning with time to spare, which is the practical use case the long reserve actually serves.

Retail is approximately $17,000-$22,000 depending on case material (steel through red gold). Pre-owned IW510205 in steel trades around $11,000-$13,500.

Portugieser Yacht Club Chronograph

The Yacht Club is the sport-oriented exception in an otherwise dress-watch family. The case is bigger at 44.6mm, water resistance increases to 60 meters, and the design uses an integrated rubber strap rather than alligator.

The movement is the calibre 89361, an in-house flyback chronograph with a 68-hour power reserve. The dial layout differs from the standard Portugieser Chronograph: hours at 12, minutes at 9, day-date at 3.

Refs IW390701 (steel) and IW390501 (rose gold) are the current production. The Yacht Club is the least Portugieser-looking watch in the line, which means it draws a more specific buyer profile: someone who wants the brand DNA at the dimensions and water resistance of a sport piece.

Pre-owned IW390701 in steel trades around $10,000-$12,000 versus a retail of about $14,500.

Portugieser Perpetual Calendar

The Portugieser Perpetual Calendar has been in the catalog since 2003 and represents IWC's mid-tier calendar complication. The standard 44mm reference uses calibre 52610 (or earlier 51614), driving date, day, month, four-digit year, perpetual leap year, and moon phase displays.

Sub-dial layout: date at 3, month at 9, four-digit year window between them, day at 12, double moon phase at 6. The moon phase is accurate to within one day every 577.5 years on the standard Perpetual Calendar.

Current production references run in gold and platinum cases. Steel was discontinued years ago. Retail starts around $42,000 for red gold and climbs to $58,000+ for platinum.

Pre-owned market for older Perpetual Calendars (IW502127, IW502134, IW503312, etc.) is reasonable. Examples in 18k red gold trade around $22,000-$32,000 depending on condition, age, and service history.

Portugieser Eternal Calendar: The Technical Flagship

IWC Portugieser Eternal Calendar reference IW505701 in platinum with silver dial, double moon phase at 6, four-digit year window, secular perpetual calendar layout The Portugieser Eternal Calendar IW505701 in 950 platinum. IWC's first secular perpetual calendar and the Aiguille d'Or winner at the 2024 GPHG.

The Portugieser Eternal Calendar (Ref. IW505701), released in 2024, is the most technically significant Portugieser ever produced. It is IWC's first secular perpetual calendar.

A standard perpetual calendar correctly accounts for the Gregorian calendar's 4-year leap cycle, however it does not account for the 100-year and 400-year rule exceptions. Standard perpetuals need manual adjustment in years like 2100, 2200, and 2300 (which are not leap years despite being divisible by 4). The Eternal Calendar mechanically accounts for all three rules.

It also features a double moon phase accurate to within one day every 45 million years. This is, by a wide margin, the most accurate mechanical moon phase ever produced.

Specs at a glance

Spec Value
Reference IW505701
Case 44.4mm, 14.9mm thick, 950 platinum
Movement Calibre 52640, automatic
Power reserve 168 hours (7 days)
Complications Secular perpetual calendar, double moon phase, 4-digit year
Moon phase accuracy One day deviation every 45 million years
Awards Aiguille d'Or, GPHG 2024
Retail ~$152,000

The Eternal Calendar took the Grand Prix de l'Aiguille d'Or at the 24th Grand Prix d'Horlogerie de Genève, the top award in the entire competition. That is the strongest external validation IWC has received in many years.

Pre-owned market for the Eternal Calendar is effectively non-existent right now. The 2024 production run is small and the buyer profile is collector-tier. Expect first secondary market examples to surface at modest premiums to retail.

Vintage and Limited Edition References Worth Knowing

The Portugieser line has produced more limited editions than most IWC families, which creates a deep secondary market for hunters. The references with the strongest collector interest:

  • IW3531 Jubilee (1993) is the 2,000-piece revival that re-launched the Portugieser line. Manual-wind, Cal. 9828, steel. Pre-owned around $5,500-$8,500.
  • IW5441 / IW544401 Regulateur are limited regulator-dial variants, gold and platinum cases. Pre-owned $15,000-$28,000 depending on case material and limited series.
  • IW3714 F.A. Jones (Ref. IW544202) is the 500-piece F.A. Jones limited edition in honor of IWC's American founder. Pre-owned $8,500-$12,000.
  • Portugieser Chronograph Rattrapante "Boutique Edition" variants are region-specific 150-piece runs (Italy, Canada, Japan, etc.). Pre-owned varies widely, $7,500-$15,000.
  • Portugieser Sidérale Scafusia is IWC's platinum tourbillon flagship with perpetual calendar and sidereal time. Production is single digits per year. Pre-owned auction territory only, $200,000+.

Pre-Owned Market Reality

WatchCharts tracks 132 distinct Portugieser references with active secondary market data. The overall average price across the line is approximately $7,000. The range runs from about $4,000 (early Valjoux-based chronographs in average condition) to $203,000 (mint platinum Grande Complication).

This is a wide market with multiple natural entry points. A buyer with $5,000 can find a credible Portugieser Chronograph from the 2010s. A buyer with $12,000 can find a modern Automatic 42 with the steel bracelet or an Automatic 40 in 18k gold. A buyer with $150,000+ can find a Perpetual Calendar in red gold or wait for an Eternal Calendar to surface.

The Portugieser's secondary market behavior tends to be stable. The line is too well-known to spike like a sport watch reference and too durable in collector interest to drop dramatically. Buy a Portugieser because you want to wear it, not because you expect appreciation.

Which Portugieser Should You Buy?

First-time luxury buyer with a budget around $7,000

Either a pre-owned Portugieser Chronograph IW371445 or IW371446 (Valjoux 7750-based, around $4,300-$5,200) or a pre-owned Portugieser Automatic 40 IW358303 (around $6,500-$7,500). The Chronograph gives you more watch and movement for the money. The Automatic 40 gives you the cleanest design statement.

Growing collector adding a dress watch

The Portugieser Hand-Wound Eight Days IW510205 is the move if your collection skews sport or automatic. The manual wind ritual, the dial simplicity, and the long reserve work as a daily exercise in mechanical appreciation.

If you want something that pairs more easily with a sport watch already in the box, consider our Cartier Tank Buying Guide for the rectangular dress watch alternative at a more accessible price.

Experienced collector chasing references

The Portugieser Chronograph Edition "150 Years" Ref. IW371602 is the under-appreciated move. It is the first reference to receive the in-house calibre 69355, it had a limited production run, and it tends to trade at or just above standard chronograph prices despite the historical significance.

Worth pairing with our Omega Speedmaster Moonwatch Buying Guide if you are building a chronograph collection across brands.

For broader IWC context, our Ingenieur 50th anniversary breakdown and pre-owned IWC Pilot's buying guide cover the rest of the brand's secondary market in similar detail.

FAQs

What is the difference between the Portugieser Automatic 40 and Automatic 42?

The Automatic 40 is 40.4mm with a 60-hour power reserve and a clean dial showing only small seconds at 6. The Automatic 42 is 42.3mm, uses the larger calibre 52011 with a 7-day power reserve, and adds a power reserve indicator at 3 and date at 6.

What movement is in the modern IWC Portugieser Chronograph?

Current production Portugieser Chronographs use the in-house calibre 69355, a column-wheel chronograph with a 46-hour power reserve. References made before 2018 use modified Valjoux 7750 base calibres.

How much does a new IWC Portugieser cost?

Retail prices range from approximately $9,500 for a steel Portugieser Automatic 40 to $152,000 for the Portugieser Eternal Calendar in platinum. The Portugieser Chronograph in steel retails around $8,750-$9,500.

Is the Portugieser Eternal Calendar worth the price?

The Eternal Calendar is a serious technical statement piece and won the top award at the 2024 GPHG. Whether it justifies $152,000 depends on what you value in a watch. The secular calendar mechanism and 45-million-year moon phase accuracy are genuine engineering achievements with no real competition in the category.

Can I buy a Portugieser pre-owned with confidence?

Yes. Portugiesers are well-documented, widely serviced, and have strong reference number traceability. Look for box and papers, recent service history (especially on automatic models near or past 5 years from last service), and a dealer who provides authentication.

What is Ceratanium?

Ceratanium is IWC's proprietary material, a titanium alloy fired in a kiln to develop a ceramic-like outer layer. It combines titanium's lightness with ceramic's scratch resistance and has a uniform dark matte finish. The 2026 Portugieser Chronograph Ceratanium (Ref. IW371631) is the first Ceratanium Portugieser.

Is the Portugieser a good first luxury watch?

Yes for buyers who want a dress watch. The Portugieser Automatic 40 is one of the cleanest dress watch design statements in the catalog at any price, it sits comfortably under a shirt cuff, and the pre-owned market is liquid enough to make selling later straightforward if your taste shifts.


The Portugieser is one of those collections where almost any reference works as a buy as long as you know which one is right for what you actually need. Browse authenticated pre-owned IWC at 5dwatches.com.