Audemars Piguet Royal Oak Offshore Diver
17 % 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
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. 15720ST.OO.A052CA.01 — Variants and collector names
Known as: ROO Diver Khaki Green, Offshore Diver Khaki, Army Green Offshore Diver, ROO Diver Green, Olive Diver
Production phases and changes
- 2021: Introduction of the 15720ST: replaces the 15710ST (Cal. 3120). New caliber 4308 (60h power reserve vs. ~50h), two black ceramic screw-down crowns, quick-release strap change, updated Méga Tapisserie aesthetic.
- 2026: Three new color variants expand the 15720ST portfolio: A403CA (Teal), A010CA (Black/Pink), A355CA (Black/Turquoise).
Movement variants
- 4308 (2021–today) · 28800 bph
Bezel variants
- Fixed Octagonal Steel
Dial variants
- Khaki Diver — ROYAL OAK OFFSHORE / DIVER; green-khaki Méga-Tapisserie dial
Crystal variants
- Double Glareproofed Sapphire
Serial numbers
- ? – ? (2021–?) — AP has used a randomized alphanumeric serial number system since ~2017 (K-series); no publicly verifiable serial ranges can be derived anymore. Serial number engraved on the case band between the lugs at 6 o'clock.
In 2021, Audemars Piguet completely overhauled the Royal Oak Offshore Diver, introducing the 15720ST as successor to the 15710ST. Beneath the fixed, octagonal steel bezel now ticks the Caliber 4308 instead of the old 3120 — 60 hours of power reserve instead of roughly 50, along with two black ceramic screw-down crowns and a tool-free quick-release strap system. The list price was CHF 21,650 excluding VAT, and the watch launched with three colorways simultaneously: A009CA in grey, A027CA in blue, and A052CA in khaki.
## Why Collectors Call A052CA "Army Green" Instead of Using the Reference Number
On forums and among dealers, the 15720ST.OO.A052CA.01 rarely goes by its full reference. Names like ROO Diver Khaki Green, Offshore Diver Khaki, and Army Green Offshore Diver are far more common, with some simply calling it the Olive Diver. The green/khaki Méga Tapisserie dial is behind the nickname — the texture reads noticeably busier under light than on its grey or blue siblings, and that's exactly what earned the piece its unofficial name.
## Five Years On, the Khaki Version Is Still in the Catalog
As of June 2026, Audemars Piguet keeps the A052CA in active production, and the 15720ST lineup has grown alongside it: teal as A403CA, black/pink as A010CA, and black/turquoise as A355CA have all joined as new colorways. For buyers, that means the khaki version isn't a model on its way out — it's an established part of a collection that now spans six colors, all built on the same technical foundation.
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
Market situation and price range
At $27,052 the Royal Oak Offshore Diver sits in a segment where first owners sell regularly — clean pieces with box and papers are not uncommon. The jump from "good" to "very good" usually costs 1,000 to 2,000 euros more at purchase. You get that premium back on resale if the condition is preserved.
Watch out for swings: This reference has an above-average volatility of 77.2 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 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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