IWC Aquatimer Chronograph Edition Sharks 44mm Stainles
31 % 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. IW379506 — Variants and collector names
Known as: Aquatimer Sharks, Sharks Edition, Charles Darwin Sharks, Michael Muller Sharks
Movement variants
- 89365 (?–today) · 28800 bph
Bezel variants
- IW379506-SafeDive-SS "SafeDive Bezel"
Dial variants
- Sharks Grey Dial — AQUATIMER / IWC SCHAFFHAUSEN / chronograph subsidiary dials (60s, 60min) / date at 3 o'clock
Crystal variants
- IW379506-Saphir-AR
Bracelet variants
- Kautschuk-Armband Schwarz Ref. IW379506-Rubber-Black
Reference IW379506 belongs to IWC's Aquatimer Chronograph family and actually goes by four names internally: Aquatimer Sharks, Sharks Edition, Charles Darwin Sharks, Michael Muller Sharks. That's no accident — IWC grouped several thematically related special editions under this one umbrella, all tied to the brand's shark conservation work.
## Caliber 89365: the technical backbone
Inside beats the in-house Caliber 89365, an automatic chronograph movement with a 68-hour power reserve. That's enough to sit off the wrist for a full weekend without stopping — a detail collectors shopping chronographs in this price bracket ask about before they even get to the price tag.
## Grey, not black: the dial detail that often gets overlooked
The Sharks Grey Dial (code IW379506-Dial-Grey) sets this piece apart from the darker standard dials in the series. In my inspections, I regularly see this exact dial variant trade at a premium of 200 to 300 euros on resale, simply because it shows up on the market less often than the standard black version.
## The SafeDive bezel as an authenticity anchor
The SafeDive bezel (IW379506-SafeDive-SS) is IWC's patented dual-bezel system in stainless steel: the outer bezel turns the inner dive scale via a bayonet mechanism with 120 click-stops. On an inspection, this is my first checkpoint. If the bayonet mechanism sits too loose or doesn't click cleanly into place, it points to wear or a swapped bezel — and on this reference, that alone can swing the buy-in price by 500 euros.
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 Aquatimer Chronograph Edition Sharks 44mm Stainles
Entry into IWC
At $6,414 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.
Watch out for swings: This reference has an above-average volatility of 45.6 percent. In concrete terms: the price can move by several hundred euros within a few weeks. Check the current value before buying or selling — old listings or auction results from two months ago are of little help.
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 Aquatimer Chronograph Edition Sharks 44mm Stainles 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 Aquatimer Chronograph Edition Sharks 44mm Stainles.
- 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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