Audemars Piguet Royal Oak ref.4100BA

The Audemars Piguet Royal Oak reference 4100BA in full yellow gold is a captivating vintage timepiece that embodies the bold elegance and innovative spirit that define the Royal Oak collection. Introduced in the late 1970s, this reference offers a more compact and wearable alternative to the original Jumbo, while retaining all the hallmarks of Gérald Genta’s revolutionary design. Executed entirely in 18k yellow gold and paired with a champagne dial, the 4100BA is a brilliant expression of 1970s luxury, blending refinement with unmistakable presence.

The 35,5mm case, crafted from solid yellow gold, features the Royal Oak’s signature octagonal bezel with eight hexagonal screws and sharply faceted edges. The brushed and polished finishes highlight the architectural nature of the design, while the integrated bracelet meticulously constructed from solid gold links provides both comfort and visual continuity. Its fluid construction and subtle tapering make it as much a piece of jewelry as a piece of watchmaking.

The champagne-toned dial complements the case beautifully, reinforcing the monochromatic golden aesthetic that gives this reference its unique charm. Decorated with the classic "Petite Tapisserie" pattern, the dial shimmers with depth and texture under varying light. Applied yellow gold hour markers and Royal Oak hands, filled with luminous material, ensure legibility while preserving the minimalist sophistication of the design. The date window at 3 o’clock adds functionality without compromising the dial’s balance.

Powering the 4100BA is the automatic Audemars Piguet caliber 2123, based on the ultra-thin Jaeger-LeCoultre 888 movement. Known for its reliability and slim profile, this movement provides smooth operation and a refined mechanical pedigree. Protected by a solid case back, the movement reflects Audemars Piguet’s longstanding dedication to technical excellence.

As a vintage piece, the Royal Oak 4100BA holds special significance within the evolution of the Royal Oak line. It represents a transitional period where the brand expanded the collection beyond the original 5402, offering more varied sizes and metal configurations while staying true to the core design language.

The Audemars Piguet Royal Oak reference 4100BA in yellow gold with a champagne dial is a statement of timeless style, vintage character, and horological importance. With its harmonious blend of form, function, and precious material, it remains a highly sought-after piece for collectors who appreciate the legacy and enduring appeal of the Royal Oak.