Unlike contemporary round cases, the 5124J-001 leans into early 20th century design language through its elongated rectangular frame. The yellow gold case measures 43 x 33.4 mm and features a stepped profile that adds depth without excess. The dial remains classically restrained, with gold markers and Arabic numerals, while the manually wound Caliber 25-21 REC PS ensures stable timekeeping with a 44 hour reserve.

There is a quiet authority in this piece. It does not rely on complications or bold statements. Instead, it delivers historical continuity and mechanical reliability in a form that remains distinctly Patek Philippe.

Patek Philippe Gondolo 5124J-001

Reference: 5124J-001
Collection: Gondolo
Case Material: 18K yellow gold
Case Shape: Curved rectangular / tonneau-inspired
Case Dimensions: 33.4 × 43.0 mm
Case Thickness: approximately 7.5 mm
Crystal: Sapphire crystal
Case Back: Cambered sapphire-crystal display back
Water Resistance: 30 m / 3 bar
Bezel: Polished 18K yellow gold.

Dial: Opaline-white / silver-toned dial with applied yellow-gold hour markers and numerals, a railway-style outer minute track and a recessed small-seconds register at 6 o’clock. Faceted Dauphine-style hands are finished in yellow gold. Specialist and dealer documentation consistently identifies the 5124J-001 with its light silver/opaline dial and yellow-gold applied elements.

Movement: Patek Philippe Calibre 25-21 REC PS
Movement Type: Manually wound mechanical
Functions: Hours, minutes and small seconds
Movement Dimensions: 24.6 × 21.5 mm
Movement Thickness: 2.57 mm
Number of Components: 142
Number of Jewels: 18
Number of Bridges: 7
Power Reserve: Minimum 44 hours
Frequency: 28,800 semi-oscillations/hour (4 Hz)
Balance: Gyromax®
Balance Spring: Spiromax®
Hallmark: Patek Philippe Seal.

Small Seconds: Subsidiary seconds at 6 o’clock.
Strap: Alligator leather, commonly documented in brown
Buckle: 18K yellow-gold prong/tang buckle.

Alternative Reference / Dial Context

The principal related references in this 5124 family include:

* 5124J-001 — 18K yellow gold with the light opaline/silver-toned dial configuration.
* 5124G-001 — 18K white gold, with documented salmon and other dial executions.
* 5124G-011 — later 18K white-gold version with blue sunburst dial.

The 5124G-011 is not a 5124J-001 dial variation; it is a separate reference.

Reference distinction: The J designation identifies the yellow-gold execution. The underlying rectangular Calibre 25-21 REC PS remains the defining mechanical architecture of the 5124 family. Bonhams has independently documented a 5124J-001 with a 33 × 43 mm yellow-gold case, silvered dial, transparent case back and Calibre 25-21 REC PS.