Rolex Yacht-Master 40
19 % 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 $19,477. 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.
Rolex Ref. 126621 — Variants and collector names
Known as: Everose Rolesor YM, Two-Tone Rose YM, Chocolate YM 40
Production phases and changes
- 2019: Successor launch: Ref. 116621 (Cal. 3135) → Ref. 126621 (Cal. 3235)
Movement variants
- 3235 (2019–today) · 28800 bph
Bezel variants
- 126621 Everose Gold Bidirektional-Lünette – 60-min
Dial variants
- Chocolate YM — YACHT-MASTER / Rolex Oyster Perpetual / DATE / applied Everose Gold stick indices
- Black YM Rolesor — YACHT-MASTER / Rolex Oyster Perpetual / DATE / applied Everose Gold stick indices
Crystal variants
- Saphir-Cyclops
Bracelet variants
- Oyster Three-Piece Solid Links Ref. Oyster-Everose-Rolesor-3Link
The Rolex Yacht-Master 40 Ref. 126621 debuted at Baselworld 2019 — not as a visual refresh, but as a genuine technical watershed. Rolex swapped the calibre 3135 for the new 3235: the Chromergy escapement with its Parachrom hairspring and Paraflex shock absorber pushed the power reserve from 48 to 70 hours. That may sound like an engineer's footnote, but it makes a real difference day to day — a watch you set down on Friday and pick up again Monday morning without ever having to reset the time. The rehaut has carried the engraved reference code ever since, making this successor reference instantly identifiable at a glance.
## Everose Gold and Two Dials That Divide Opinion
The 126621 case measures 40 mm and pairs Oyster steel with Everose Gold in a two-tone configuration. In the trade it goes by "Everose Rolesor YM" or simply "Two-Tone Rose YM." The bidirectional Everose Gold bezel with its 60-minute scale remains the defining visual signature of this reference. Rolex offers two dial options: the chocolate dial (126621-0001) with Chromalight indexes — known among collectors as the "Chocolate YM 40" — and its black counterpart (126621-0002). In my buying experience, the chocolate dial consistently draws around 15 to 20 percent more enquiries than the black version; the demand figures speak for themselves.
## What the Version Jump Means at Resale
The step from the 116621 to the 126621 is not a matter of taste. Seventy hours of power reserve and a modernised escapement platform are arguments that carry real weight at resale. Buying a 116621 today means paying less — but also accepting older technology. For anyone who wears the watch daily and thinks long term, the 126621 is the clear choice.
Brand profile: Rolex
Rolex is the most counterfeited watch brand in the world. Super-clones (VSF, ARF, Clean — the latter inactive after a raid in 07/2025, only old stock remaining) achieve 95%+ similarity. Authenticity is almost always detectable only via micro-details + movement behavior.
- Case back: ALWAYS solid and closed — any display window = definitely fake (exception: Vintage Ref. 6085 only)
- Minute hand length: genuine Rolex minute hands end EXACTLY at the minute chapter ring. 1 mm too long = fake. Strongest VSF tell.
- Seconds hand: smooth sweep without any hesitation — the slightest tick = fake
- Cyclops lens (on date models): must magnify exactly 2.5×, date fills almost the entire window
Serial number format: Since 2010: random alphanumeric combination (e.g. 'G3M9K721'). 2000–2010: letter + 6–7 digits. Serial number engraved on the rehaut at 6 o'clock (from ~2005). Older models: between the lugs at 6 o'clock on the case.
Further sources
Buying guide: Rolex Yacht-Master 40
Market situation and price range
At $16,859 the Yacht-Master 40 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 58.9 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 Rolex Yacht-Master 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 Yacht-Master 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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