IWC De Saint Chronograph Box + og. Papiere
36 % 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. IW377713 — Variants and collector names
Known as: Saint Ex Chrono, Antoine Chrono, Brown Pilot Chrono
Movement variants
- 79320 (?–today) · 28800 bph
Bezel variants
- IW3777-Bezel-SS-Fixed
Dial variants
- Saint Ex Brown Dial — Arabic numerals white luminescent / day+date double window at 3 o'clock / 3 sub-dials: running seconds, 30-minute counter, 12-hour counter / PILOT'S WATCH CHRONOGRAPH inscription
Crystal variants
- IW3777-Saphir-AR
Bracelet variants
- Santoni Kalbsleder braun mit weißer Naht Ref. IW377713-Strap-Santoni-Brown-Calfskin
The IWC Pilot's Watch Chronograph IW377713 goes by three names in collector circles — most often the "Saint Ex Chrono," after Antoine de Saint-Exupéry, who disappeared over the Mediterranean in 1944 and whose writings IWC has drawn on as a brand cornerstone since the early 2000s. The tobacco dial (code IW377713-Dial-Brown-Tobacco) is what sets it apart from the black base version: brown ages differently under UV light, and on older examples with genuine patina, secondary-market prices can climb to as much as 130% of the original list price.
## Caliber 79320 — What's Behind It
The movement is not an in-house IWC development — it's the caliber 79320, a modified Valjoux 7750 derivative beating at 28,800 vibrations per hour with roughly 44 hours of power reserve. For a pilot's chronograph at this price point — retail ran between $5,372 and $6,287 depending on production year — that's an honest call: a tough everyday chronograph rather than in-house manufacture marketing. The fixed stainless-steel bezel (IW3777-Bezel-SS-Fixed) offers no rotating function, which pilot enthusiasts read as a correct period detail. Antoine de Saint-Exupéry flew by sight, not by bezel timer.
## What the Market Does with the Brown Dial
Anyone hunting for this tobacco dial on resale platforms needs all three collector names — Saint Ex Chrono, Antoine Chrono, Brown Pilot Chrono — or listings under $3,658 will simply slip by unnoticed. The 43mm steel case is straightforward to service, parts for the 79320 movement are readily available, and an IWC factory overhaul runs approximately $686 to $914. For a reference with this kind of instant recognition, that's a manageable cost of ownership.
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 De Saint Chronograph Box + og. Papiere
Entry into IWC
At $6,572 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 51.8 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 De Saint Chronograph Box + og. Papiere 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 De Saint Chronograph Box + og. Papiere.
- 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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