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What every digit and letter in a Rolex reference means — with worked examples for Submariner, GMT-Master II, Daytona, Datejust, and Day-Date.
A Rolex reference number is a compact spec sheet. Once you know how to read it, six digits tell you the model family, the bezel type, and the case metal — and any trailing letters pin down the exact bezel finish. This guide walks through the structure Rolex has used on modern references since the mid-2000s, then decodes real-world examples you'll see on the pre-owned market.
If you just want the answer for a specific watch, snap a photo and the FindWatch identifier will return the reference in seconds. If you already have the reference and want live market pricing, jump straight to the price search.
126 = current-generation Submariner family (Cal. 3235) · 6 = rotating dive bezel · 1 (wait — read as 126610) · trailing 0 = Oystersteel case · LN = Lunette Noire (black Cerachrom insert).
126 = current 40mm GMT family · 7 = 24-hour rotating GMT bezel · trailing 10 = Oystersteel case · BLRO = Bleu/Rouge Cerachrom (Pepsi).
126 = current Datejust 41 family · 3 = fluted bezel · trailing 34 → 4 = white Rolesor (steel case + white-gold bezel). No letter suffix because the bezel has only one execution.
116 = 40mm Daytona family (Cal. 4130) · 5 = Daytona-specific tachymeter bezel · trailing 00 = Oystersteel case · LN = black Cerachrom insert. Discontinued in 2023 and replaced by 126500LN.
228 = current Day-Date 40 family (Cal. 3255) · 2 = fluted bezel · trailing 38 → 8 = yellow gold. No letter suffix — dial variant is the only remaining decision.
The reference number identifies the configuration — model, bezel, metal. Thousands of watches share a reference. The serial number is unique to your specific watch and encodes the production date (on pre-2010 Rolexes) or is fully randomized (2010 onward).
Both are engraved between the lugs: reference at 12 o'clock, serial at 6 o'clock. You need to remove the bracelet to see them. For a full brand-by-brand breakdown of serial locations, read the serial-number guide.
Upload a dial photo and FindWatch will identify the reference, confirm the bezel and metal, and surface live market pricing and authenticity checks against the catalogue.
Four- and five-digit references pre-date the digit-by-digit encoding above. Rolex instead assigned reference numbers sequentially within a family, then appended a single letter or digit for material variations.
Submariner: 5513 (no-date, acrylic), 14060 (no-date, sapphire), 16610 (date, sapphire, aluminium bezel), 16800/168000 (transitional).
Datejust: 1601 (fluted bezel, acrylic), 1603 (engine-turned bezel), 16014 (fluted, sapphire), 16234 (fluted, white Rolesor).
Daytona: 6239/6241 (manual, exotic dials), 6263/6265 (manual, screw-down pushers), 16520 (Zenith automatic), 116520 (in-house Cal. 4130).
When cross-shopping a vintage Rolex, match reference to caliber, dial signature, and bracelet code — collectors price these details separately, and a mismatched service dial can shift value by five figures.
Rolex uses French abbreviations for Cerachrom bezel colours: LN = Lunette Noire (black), LB = Lunette Bleue (blue), LV = Lunette Verte (green), BLRO = Bleu/Rouge (Pepsi), BLNR = Bleu/Noir (Batman), CHNR = Chocolat/Noir (Root Beer).
Between the lugs at 12 o'clock. Remove the bracelet — it's invisible while the strap or bracelet is fitted. The serial sits between the lugs at 6 o'clock.
Rolex needed room to encode bezel and material information without collisions when they overhauled the range with in-house movements and Cerachrom bezels in the mid-2000s. Old sequential references worked fine when there were fewer variations per family; today a single Datejust can ship with a dozen bezel-and-metal combinations.
Yes — the reference identifies the configuration, not the individual watch. Two 126610LN Submariners are the same watch on paper. Only the serial number is unique.
Yes. Upload a dial photo on the home page and the identifier returns the reference plus an authenticity check. You can also enter a reference directly in the price search to compare live dealer pricing against MSRP.
Where to find and how to read the serial number on Rolex, Omega, Patek, and other major brands.
An 11-point authenticity checklist covering dial printing, bezel action, caseback engraving, and movement tells.
Current MSRP and pre-owned pricing across every modern Submariner reference.
See any Rolex reference on your wrist, on a strap change, or in a studio scene before you buy.
Upload a dial photo and FindWatch returns the exact reference, confirms the bezel and metal, and shows live market pricing.