Audemars Piguet Royal Oak Offshore Diver
22 % 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.
What if you had bought back then …
What would a purchase at the median market price back then have become — at today's level of $37,438. A pure return calculation, excluding insurance, servicing and transaction costs.
Data from an aggregated median time series (watch_market_daily). CAGR = Compound Annual Growth Rate, normalized to 365 days. Not an investment recommendation.
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Technical data
Lift angle 52° — important for timing-machine diagnosis: with this value a watchmaker can correctly measure rate deviation, amplitude and beat error. ChronoCheck verifies such technical details directly from the manufacturers' factory specifications.
Audemars Piguet Ref. 15711OI.OO.A006CA.01 — Variants and collector names
Known as: Japan Diver, Japan Edition, Pink Gold Japan Diver, Rose Gold LE 500 Japan, ROO Diver Japan 500
Movement variants
- 3120 (2018–2019) · 21600 bph
Crystal variants
- Double Glareproofed Sapphire
Serial numbers
- ? – ? (2018–2019) — Limited edition of 500 pieces. AP case serial number in the format 'K[6 digits]' (Christie's lot number K40902 documented as an example). Exact serial range of the 500 pieces is not publicly documented.
The Ref. 15711OI.OO.A006CA.01 is one of those watches where the production number alone tells the story. 500 pieces, made exclusively for the Japanese market, case entirely in pink gold. Collectors know it as the "Japan Diver," "Pink Gold Japan Diver," or simply the "ROO Diver Japan 500" — five nicknames for the same piece, proof of how much this reference gets talked about internationally despite never having been officially sold outside Japan.
## Why the Caliber 3120 Is the Real Differentiator
Under the hood sits the Caliber 3120, AP's in-house automatic movement that's been powering the Royal Oak family since 2003. No outsourced movement, no mass-produced base caliber — on a full-gold Offshore Diver, that's the detail separating a design exercise from a serious manufacture watch. No documented dial or bezel variants exist for this piece, which is more the rule than the exception for a limited run. No production changes are on record for this reference either — the 500 pieces appear to have been made in a single batch.
## What This Means for Buyers Outside Japan
Anyone hunting this reference outside Japan is, by definition, buying a reimport. That typically drives up the price and lengthens the verification chain — papers, customs history, service records. On a full-gold Offshore limited to 500 pieces, a close look at unbroken provenance pays off twice over, since counterfeits turn up disproportionately often among limited editions. This is exactly where an independent inspection before purchase earns its keep — not after.
Brand profile: Audemars Piguet
AP Royal Oak is one of the most coveted and most counterfeited luxury watches. The distinctive octagonal bezel with 8 screws and the tapisserie dial are the central inspection points.
- Date disc: genuine caliber 3120/5120 flips the date INSTANTLY at midnight (a snapping jump) — clones creep from 23:00 to 01:00
- Thickness: Royal Oak Jumbo 15202 is exactly 8.1 mm thick — clones measure 8.4–8.8 mm (movement sits too tall) — calipers reveal it immediately
- Tapisserie dial: under 10× magnification the pyramid edges must be sharp and geometrically precise — fakes show soft, pressed, or laser-etched surfaces
- Bezel screws: 8 hexagonal screws with mirror polishing and exact alignment — fakes: flatter, duller, asymmetric
Serial number format: AP serial numbers: 6–7-digit number engraved between the lugs at 9 o'clock. Reference number engraved separately on the opposite side. Very small — barely legible without a loupe.
Further sources
Buying guide: Audemars Piguet Royal Oak Offshore Diver
What drives the price here
At $37,438 the watch sells well if the condition is right. A market rule of thumb: a complete set with box, papers and warranty card brings 10 to 15 percent more than the bare watch. Buying without papers can pay off, but you take the same discount again later when you resell.
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 Audemars Piguet Royal Oak Offshore Diver 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 Royal Oak Offshore Diver.
- 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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