Rolex Datejust 36
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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 $5,592. 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. 1603 — Variants and collector names
Known as: Wide Boy, Pie Pan Datejust, Engine-Turner, Steel Datejust, Sigma Datejust, Buckley DJ, Tiffany DJ 1603
Production phases and changes
- 1959: Introduction of Ref. 1603 with Cal. 1565 (18.000 bph) and Pie-Pan dial
- 1962: Transition from Alpha hands to baton hands (Baton Hands)
- 1965: Switch from Cal. 1565 to Cal. 1575 (19.800 bph, 48h power reserve)
- 1969: Introduction of Sigma dials with APRIOR gold marking
- 1972: Cal. 1575 receives hacking seconds
- 1974: Jubilee bracelet 62510H switches to more substantial outer links
- 1977: End of main production for Ref. 1603; superseded by Ref. 16030 (Cal. 3035, Quickset)
Movement variants
- 1575 (1965–1978) · 28800 bph
Bezel variants
- Engine-Turned Steel Bezel "Engine-Turner"
Dial variants
- Gilt Explorer — EXPLORER (gilt) / OYSTER PERPETUAL / Superlative Chronometer / 'T Swiss T' or 'Swiss T<25' below 6h / no Chapter Ring
- Tiffany Dial — Same as respective standard variant, with additional 'TIFFANY & CO.' on dial
- Buckley Dial — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / T SWISS T – Roman numerals
- Linen Dial — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / T SWISS T
- Black Matte Pie Pan — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / T SWISS T
- Blue Pie Pan — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / T SWISS T
- Pie Pan Silver — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / T SWISS T
- Sigma Dial — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / σ T SWISS T σ
- Wide Boy — OYSTER PERPETUAL DATEJUST / Superlative Chronometer / T SWISS T
Crystal variants
- Plexi 25-127 (Top Hat)
Bracelet variants
- Jubilee Ref. 62510H
- Oyster Folded-Link mit Taucherverlängerung Ref. 9315
Serial numbers
- 399.453 – 516.000 (1959–1960) — Movement serial numbers with 'D' prefix for date calibers (1565/1575). Case series engraved between the lugs at 6 o'clock.
- 516.000 – 1.100.000 (1960–1965) — Main production phase 1 with Cal. 1565. Alpha hands through approx. 643.000 (1961), baton hands thereafter.
- 1.100.000 – 2.241.882 (1965–1970) — Transition to Cal. 1575. First Sigma dials.
- 2.241.882 – 5.008.000 (1970–1977) — Late production 1603. Cal. 1575 with hacking from approx. S/N 2.589.295 (1972). Last Pie-Pan examples toward the end of this range.
## The Dial Decides the Price
Early examples come with the Pie-Pan dial: concave, sunken in silver or blue, with a play of light no later Datejust has ever replicated. Paired with the engine-turned steel bezel, this is the classic configuration buyers actively seek out today. The "Wide Boy" carries broad indices without an applied chapter ring — collectors pay considerably more for this variant than for the later Sigma dials that appeared from 1969 onward, marked by σ symbols at 6 o'clock to denote 18-karat gold indices. The double-signed Tiffany dial is widely regarded as a category of its own.
## Two Calibers, One Seamless Transition
From 1959, the 1603 ran on Cal. 1565 at 18,000 beats per hour. Around 1965, Cal. 1575 arrived with 19,800 bph and 48 hours of power reserve — the bridge has carried the engraving "1570" ever since. The transition was not clean-cut; individual 1565 cases continued to appear even after 1965. From serial number 2,589,295 — approximately 1972 — the seconds hand stops when the crown is pulled. Those who set their watch to the minute every day still appreciate this detail.
## Why 1977 Was the End
The last serial numbers sit around 5,008,000. The successor 16030 brought a Quickset date and a flat dial — no more Pie-Pan. What disappeared with it is exactly what makes an early 1603 instantly recognizable in photographs: that curved depth no successor has ever matched.
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 Datejust 36
Entry into Rolex
At $5,597 this reference is one of the more affordable ways to wear a Rolex 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 72.3 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 Datejust 36 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 Datejust 36.
- 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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