IWC Portugieser Automatic 40
10 % below RRP
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ℹ️ 1-month trend
Price change over the past 30 days. Shows the short-term market movement — relevant if you want to buy or sell soon.
ℹ️ 4-month trend
The central metric behind the momentum score. It filters out short-term swings and shows the true, medium-term market trend of this reference.
ℹ️ Volatility
Annualised price fluctuation. Below 10 % = very stable, 10–20 % = normal, above 20 % = volatile. With high volatility the price can change quickly — in both directions. Be cautious about buying without checking the current price.
ℹ️ Momentum score
ChronoCheck's own indicator from 0 to 100, calculated from the 4-month trend, volatility and market direction.
- Above 60 — Upward trend. Good time to sell, prices are rising.
- 40 – 60 — Neutral. Stable price level, no pressure to act.
- Below 40 — Downward trend. Wait or enter at a good price.
ℹ️ Investment Grade A/B/C/D
ChronoCheck's own rating for each reference. A 0–100 point scale, made up of four weighted components:
- Momentum (40 pts) — trend strength from the momentum score.
- Liquidity (25 pts) — number of active live listings.
- Stability (20 pts) — inverse volatility — the calmer, the better.
- Source robustness (15 pts) — number of independent market sources.
- A · 75+ Trend is right, liquidity good, data broad.
- B · 55–74 Solid, but one component weaker.
- C · 35–54 Average, volatility or market breadth weigh on it.
- D · below 35 Downward or too little data — a collector's piece.
Not investment advice. Pure data analysis from aggregated market sources.
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Technical data
IWC Ref. IW358313 — Variants and collector names
Known as: Salmon Portugieser, Salmon Porty, Salmon Auto 40
Movement variants
- 82200 (?–today) · 28800 bph
Bezel variants
- IW358313-Bezel-SS-Fixed-Polished
Dial variants
- Salmon Dial — Applied Arabic numerals, minute scale on rim, Small Seconds at 6 o'clock, IWC text at top
Crystal variants
- IW358313-Saphir-AR-Doppel-Konvex
Bracelet variants
- Alligatorleder Schwarz 20mm mit Faltschließe Ref. IW358313-Strap-Alligator-Black-20mm
The IW358313 is the Portugieser Automatic 40 in the version collectors actually talk about: salmon dial, polished stainless steel case, 40.4 mm diameter. Anyone searching for the reference finds it under "Salmon Porty" or "Salmon Auto 40" — nicknames as firmly established in classifieds and Watch Exchange threads as IWC's official designation.
## How a Dial Color Drives Resale Value
The warm salmon dial isn't a passing trend — it's a durable price argument. Sunray dials in salmon or copper hold their ground on the pre-owned market considerably better than neutral white dials of the same reference; the premium consistently runs 8 to 12 percent in favor of the salmon dial. Powering the IW358313 is the in-house caliber 82200 with 60 hours of power reserve and a bidirectional rotor, introduced by IWC in 2019 as the replacement for its predecessor caliber.
## What the Polished Steel Case Reveals About Its Buyer
The fully polished bezel (code: IW358313-Bezel-SS-Fixed-Polished) places this reference squarely in the dressy-casual segment. No satin finishing, no ceramic insert — just worked stainless steel that reads equally well with an open collar or a suit. In our inventory, the IW358313 surfaces regularly between $5,486 and $6,401 depending on condition and whether the original box and papers are present.
Brand profile: IWC
IWC Schaffhausen produces high-quality pilot and sports watches. The Portugieser, Pilot's Watch (Big Pilot + Mark XVIII/XX), and Portofino are the most frequently faked references. Since 2025, APS Factory V3 has produced integrated 52010 super-clones with correct case thickness — classic tells (case thickness, movement visibility) are only partially reliable against these. Key checks today: engraving depth, seconds tick interval, thermally blued hand color, and sub-dial proportions.
- Serial number: genuine IWC serials are 6 digits, purely numeric, on the caseback — all serial numbers are verifiable in the IWC 'My IWC' portal. Fakes often have 7 digits or a mix of letters and numbers.
- Portugieser sub-dial seconds intervals: a GENUINE piece has exactly 3 mini-ticks between each seconds index (high beat rate of 28,800 vph) — fakes have 4 or irregular ticks (lower beat rate).
- Caseback engraving 'International Watch Company': genuine engraving is DEEP (perceptible with a fingernail) and sharp-edged — fakes are shallower, sometimes just laser-printed rather than truly engraved. Test: raking light and a loupe.
- Portugieser/Portofino blue hand color: thermally blued steel shifts from deep blue to light violet depending on viewing angle — painted fake hands show a flat, uniform blue.
Serial number format: IWC serial numbers: 6-digit numeric on the caseback. Verifiable online via the IWC My IWC Portal.
Further sources
Buying guide: IWC Portugieser Automatic 40
Entry into IWC
At $7,487 this reference is one of the more affordable ways to wear a IWC on your wrist. That is precisely why many pieces have already passed through several hands — condition varies accordingly. Buyers here should pay particular attention to service history and honest photos from the seller.
What to look out for when buying?
- Authenticity: The serial number and reference on the case must match the papers. A professional authenticity check of the IWC Portugieser Automatic 40 reliably rules out counterfeits.
- Condition: Check scratches on the case and bezel — professional refurbishment can leave traces.
- Service history: A documented service by the manufacturer or a certified watchmaker increases the value.
- Scope of delivery: Box, papers and warranty card make a noticeable price difference on the Portugieser Automatic 40.
- Independent certification: The CPS-52 standard covers 52 checkpoints — from the serial number and the timing machine to water resistance. The result is secured on the blockchain and can be verified at any time.
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