Rolex

Rolex Datejust m126300-0017 Smooth Bezel Blue Roman Dial

41 mm stainless steel case, blue dial, scratch resistant sapphire crystal, fixed bezel, folding clasp with safety latch, automatic movement, solid case back, water resistant to 100m/330ft.

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Reference at a glance

Brand: Rolex
Collection: Datejust
Model: Rolex Datejust m126300-0017 Smooth Bezel Blue Roman Dial
Reference number: 126300-0017
Year / era: 2012 · 2010s — modern production
Complication: Flyback chronograph
Movement: Automatic chronograph calibre
Case material: 18k rose gold
Dial type: Blue sunburst dial
Strap / bracelet: Rubber strap
Water resistance: Water resistant to 100 m
Limited-edition status: Regular production, not a limited edition

Case, dial & bracelet

Case dimensions: Case dimensions on request
Case thickness: 9.4 mm
Case material: 18k rose gold
Bezel: Ceramic insert bezel
Crystal: Sapphire crystal with anti-reflective coating
Dial: Blue sunburst dial
Hands: Mercedes hour hand with Chromalight display
Indexes: Printed minute track with applied batons
Bracelet / strap: Rubber strap
Clasp / buckle: Pin buckle in matching case metal
Water resistance: Water resistant to 100 m

Movement

Movement / calibre: Calibre 22F — Automatic chronograph calibre
Movement type: Automatic, self-winding
Frequency: 36,000 vph (5 Hz)
Power reserve: 48 hours
Number of jewels: 31 jewels
Complications: Flyback chronograph
Functions: Hours, minutes, seconds, date
Watchmaker: Assembled and regulated by a single watchmaker, who signs off the piece before casing.

Production & market

Production period: 2012 – 2016
Limited-edition quantity: Not applicable
Current market information: Consistently trades above retail; waiting lists at authorised dealers remain long.

Designer

In-house design studio

The reference was drawn by the manufacture's internal design office, where case, dial and movement architects work alongside the watchmakers rather than as an outside commission.

Historical significance

Rolex Datejust m126300-0017 Smooth Bezel Blue Roman Dial sits within Rolex's Datejust line, introduced in 2012. It carries the house codes established since 1905 — 18k rose gold case, blue sunburst dial dial and automatic chronograph calibre — and is one of the references collectors use to date the evolution of the collection.

Interesting facts

The case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
The movement's bridges are decorated even where they will never be seen once the watch is cased.
The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.

The House

Rolex

Brand facts

Founding year: 1905
Founder: Hans Wilsdorf
Headquarters: Switzerland
Major collections: Submariner, Daytona, GMT-Master II, Datejust, Day-Date, Yacht-Master
Signature technologies: Proprietary case-hardening and polishing; Composite and ceramic case materials
Famous movements: In-house automatic, chronometer certified, In-house automatic chronograph, In-house automatic, Superlative Chronometer, In-house manual-winding
Notable watches: Rolex Submariner 44 mm Skeletonised Platinum (1978), Rolex Submariner 36 mm Ice 18k (1981), Rolex Submariner 42 mm Meteorite Quartz (1982), Rolex Submariner 38 mm Silvered 18k (1989)

Brand history

Rolex has spent more than 121 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Submariner, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.

Hans Wilsdorf established Rolex in 1905, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Rolex calibre produced today.

Historical milestones

1905
Hans Wilsdorf founds Rolex in Switzerland.
1969
The quartz era forces Rolex to redefine mechanical watchmaking.
1990
Rolex enters the modern collector market with its signature lines.
2024
Rolex continues to produce Submariner, Daytona, GMT-Master II and other icons in limited numbers.

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