Exceptional Swiss watch with 16 Complications Circa 1992

Gold astronomic pocket watch
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A highly exceptional and extremely important, unique Swiss 18K gold watch, circa 1992. keyless Grande Complication, ultra Complicated with sixteen Complications, Grande et Petite Sonnerie clock watch with minute repeating, split-seconds chronograph with visible works, instantaneous 30-minute register, instantaneous perpetual calendar with phases of the moon and 24-hour indications. Accompanied by original leather fitted mahogany box and the original certificate. Published in the 1993 Patek Philippe catalogue, case No. 2813004. Made in 1992, sold in 1999.

A push-button for the split-seconds at 10:30, chronograph safety bolt at 11, switch from petite to grande sonnerie at 3, silent/striking switch at 9. Gold hinged cuvette. Matte white dial, radial Roman numerals, outer minute divisions, outermost chronograph track with fifths of second divisions and Arabic five second/minute numerals, four subsidiary dials for days of the week concentric with 24-hour indications, date concentric with seconds, months concentric with leap year indication, aperture for the phases of the moon and moon’s age concentric with minute register. Blued steel spade hands.

A rhodium-plated movement, Geneva striping decoration, two-train, tandem winding, stamped with the Seal of Geneva Quality Mark, 44 jewels, adjusted to temperature, isochronism and five positions, straight-line counterpoised lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, swan-neck micrometric regulator, repeating on gongs by tripping a small slide in the band at 5 o’clock. Dial, case and movement signed.
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Diameter: 60 mm
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Signed: Patek Philippe  Genève
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Seal of Geneva Quality Mark. The Seal of Geneva Quality Mark is a trademark of the Office of Geneva Control of Watches. It was established on November 6, 1886, amended several times with the largest change incorporated on December 10, 1955. Its function was to voluntarily control watches made in the Canton of Geneva. Paragraph three of the statutes state that the watches awarded the Seal of Geneva Quality Mark must “after examination prove to have a perfect mechanism to ensure regular and durable functioning”.