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Audemars Piguet Royal Oak 4100BA - Two-Tone Grey Dial

Details

The Original Ethos In A Wearable Size

The Royal Oak 4100BA is a direct link to the original spirit of Gérald Genta's 1972 design. At 35mm, it offers the revolutionary look in proportions that are more subtle and truer to the original concept than many of its modern counterparts. The two-tone steel and yellow gold execution was a defining look for the era, adding a layer of warmth to a design that was famously born in cold steel. This reference is a reminder that the Royal Oak's power was always in its lines, not just its size.

A Classic And Balanced Configuration

This example stands out for its classic combination of materials and its well-preserved dial. The grey dial provides a neutral backdrop for the hands and markers, creating excellent legibility. The 35mm case size is increasingly sought after by collectors who appreciate a more traditional fit. It delivers the full Royal Oak experience on the wrist without the weight or presence of the larger, contemporary models.

A Clean, Unpolished Example

The overall condition of this watch is good. The two-tone case appears unpolished, retaining its iconic shape and sharp bezel facets. The grey dial is clean, and the integrated bracelet is in solid shape. The watch wears comfortably and presents with the integrity you expect from a vintage Audemars Piguet. As with every watch we offer, this piece has been verified as mechanically sound and is ready to wear.

For The Person Who Gets It

This watch is for the enthusiast who wants the essential Royal Oak experience. It's for someone who understands that the soul of this design is in its proportions, the integration of the bracelet, and the quality of its finishing. The 35mm size is not a compromise, it's a deliberate choice for a more understated and classic presence. 


Key Specs

Reference: 4100BA

Model: Royal Oak

Movement: Automatic

Bracelet Length: 6.6in

Case Size: 35mm

Bezel: 18K Yellow Gold

Bracelet: Integrated Two-Tone Bracelet

Dial: Grey

Metal: 18K Yellow Gold & Stainless Steel

SKU: 656

History

The Royal Oak arrived in 1972 as one of the most deliberately confrontational designs in the history of Swiss watchmaking. Created by Gérald Genta in a single night for the Basel watch fair, it was the first luxury watch to be built in stainless steel and priced at a level that exceeded most gold watches on the market. The octagonal bezel secured by exposed hexagonal screws, the integrated bracelet that flowed directly from the case, and the "Grande Tapisserie" guilloché dial were all elements that broke with every accepted convention of what a luxury watch should look like in 1972. The industry dismissed it and the public eventually embraced it completely.

The Royal Oak's acceptance took time. In its first years the watch sold slowly outside of Italy, where it found an immediate audience among those who understood its radical proposition. As the 1970s progressed and the quartz crisis devastated traditional Swiss manufacturing, the Royal Oak's position as a high-end mechanical watch in steel became increasingly significant. It demonstrated that a correctly designed mechanical watch could command a premium over quartz technology on the basis of design and craftsmanship alone. This contribution to the survival of Swiss watchmaking is taken seriously within the industry to this day.

For collectors, the Royal Oak represents the apex of the integrated sports watch category — a category it created and has never relinquished. The earliest references with "Mark I" dials and thin cases command the highest premiums, while the expanded family of sizes and complications produced across five decades offers entry points at multiple levels of the market. The integrated bracelet in particular ages in ways that make vintage examples feel more personal and worn-in than new production, and the specific quality of the finishing — alternating brushed and polished surfaces — rewards close attention in a way that few watch designs can match.