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Rolex Datejust — "Wideboy" Sigma Dial

Details

The Story

This is among the most quintessential Rolex models out there. A Rolex Datejust reference 1603 with rare “wideboy” (wider than usual) hour markers and Sigma markings on the dial, meaning the indices are made of white gold. The lume plots on the hour markers have developed a nice yellow patina and the classic silver sunburst dial is clean from any scratches or marks. Complete on its original jubilee bracelet, this is an unmissable piece.

The Details

Brand: Rolex

Model: Datejust ref. 1603 (1970s)

Features: Date, “Wideboy” indices, Sigma dial

Case: 36mm stainless steel

Movement: Original Rolex automatic

Bracelet/Strap: Original signed jubilee bracelet, fits up to a 7.5” wrist

Lug Width: 20mm

Box & Papers: No

Condition: Some case wear consistent with age, overall very good cosmetic condition.

Key Specs
History

Introduced in 1945 to mark Rolex's 40th anniversary, the Datejust was the first self-winding, waterproof wristwatch to display the date in a window at 3 o'clock. The name said everything: the date, just there, automatically.

The watch debuted alongside the Jubilee bracelet — a five-piece link design created specifically for the occasion and still one of the most copied bracelet patterns in watchmaking. Later iterations added the iconic cyclops lens, magnifying the date 2.5x directly above the aperture, a detail so practical it became a Rolex signature.

Over the decades the Datejust evolved through generations of references — from the early 1600-series with engine-turned bezels to the 1603 in yellow gold, the 16013 and 16030 two-tones of the 1980s, the 16233 and 116233 of the 1990s and 2000s — yet the core proposition never changed: a 36mm case, an automatic movement, and a date that flips at midnight.

It's the Swiss watch equivalent of a white oxford shirt. Timeless in steel, versatile in two-tone, proper in solid gold. Collectors prize the earlier sigma-dial examples for their textural richness; later smooth-dialed pieces wear as effortlessly today as they did the day they left Geneva. Few references have ever achieved this level of consistency across six decades of production.