Grand Complications Ref. 6159G-001 Gold

Patek Philippe Ref. 6159G-001 “Perpetual Calendar Retrograde Date”

A Fusion of Tradition & Innovation — This model reinterprets the perpetual calendar with a retrograde date display, combining classic elegance with modern flair. Hodinkee+2The Hour Markers+2

Key Features & Design

• Case Material: 18-karat white gold. Wempe Online Shop+2Patek Philippe SA+2

• Case Size: 39.5 mm diameter, 11.49 mm thickness. Wempe Online Shop+2HOROBOX+2

• Bezel & Caseback: Both bezel and back are decorated with the guilloché “hobnail” (Clous de Paris) pattern, a classic Patek Philippe detail. Patek Philippe SA+2HOROBOX+2

• Dial:
    • Smoked / grey-metallized sapphire crystal dial with a black gradient rim. Patek Philippe SA+2Hodinkee+2
    • Applied white-gold baton-style hour markers and dauphine hands, both luminescent for visibility in low light. The Hour Markers+3Wempe Online Shop+3Patek Philippe SA+3
    • Retrograde date display (an arc from about 8 o’clock to 4 o’clock), jumping back to the 1st of each month. Apertures for day, month, and leap-year at 9, 3, and 12 o’clock respectively. Moon-phase at 6 o’clock. Hodinkee+2The Hour Markers+2

Movement & Technical Details

• Caliber: Self-winding 26-330 S QR. Patek Philippe SA+2Hodinkee+2

• Functions: Hours, minutes, central seconds; perpetual calendar with day, month, leap-year; moon-phase; retrograde date. The Hour Markers+2Patek Philippe SA+2

• Power Reserve: Between 35 and 45 hours depending on use. Patek Philippe SA+1

• Frequency: 28,800 vibrations/hour (4 Hz) for smooth sweep and responsive operation. Patek Philippe SA+1

• Number of Components / Jewels: ~368 parts, 31 jewels. Patek Philippe SA+1

Strap, Wearability & Additional Details

• Strap: Black composite strap with fabric texture and cream-colored contrast stitching. Patek Philippe SA+1

• Clasp: Patented triple-blade fold-over clasp in white gold. Patek Philippe SA+1

• Water Resistance: 30 meters (≈ 3 ATM) — suitable for everyday wear, but avoid immersing. HOROBOX+1

Aesthetic & Significance

• The smoked sapphire dial allows partial visibility of the movement beneath, giving the watch a blend of transparency and traditional display—an aesthetic approach that elevates the dial beyond mere function into an invitation to observe mechanical art. The Hour Markers+1

• The hobnail bezel/caseback detail ties it back to Patek’s heritage (seen in Calatrava models), even as the complications and modern dial styling push forward. HOROBOX+2Hodinkee+2

• The retrograde date adds dynamic movement to the dial, a mechanical flourish that reminds wearer monthly of the craftsmanship inside.