69 Patek Philippe A fine and elegant, Calatrava Clous de Paris, wristwatch in yellow gold, with hobnail bezel, reference 3520.

Estimate: € 6.000 –⁠ 12.000

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model Calatrava Clous de Paris
year Circa 1980s
reference 3520/10
case material 18K yellow gold
case number 2'809'664
bracelet material 18K yellow gold Patek Philippe bracelet, approximate length 170mm
movement type Manual, cal. 177, 18 jewels
movement number 1'368'133
dimension 32mm Diameter
signed Case, dial and movement
accessories Accompanied by Patek Philippe extract from the archives.

At the intersection of engineering finesse and timeless restraint lies Patek Philippe’s reference 3520, a masterpiece conceived in the mid-1960s when thinness, precision, and discretion were the hallmarks of refined taste. Introduced in 1965, the reference 3520 quickly garnered admiration as the thinnest waterproof wristwatch ever created — a technical accolade made even more impressive when wrapped in such understated elegance. This particular example belongs to the rarer second series, distinguished by its Caliber 177 movement — a manual-wind marvel conceived with an obsessive focus on slimness and reliability. The case is a study in symmetry: round, balanced, and punctuated by the "Clou de Paris" hobnail bezel, rendered in rich 18k yellow gold. Its integrated bracelet, very finely preserved, adds a sculptural quality to the piece, draping the wrist like woven gold thread. The white enamel-like dial shows painted Roman numerals in perfect alignment, and slim oxidized hands that recall the precision of an architect’s drafting tool. A time-only dress watch in theory, but in truth, an object of cultural permanence.

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