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The Index — Vintage watches, decoded.References, dials and variants up to 2000

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Brands
Patek Philippe
Calatrava
3520

Calatrava 3520

1965–?2 variants

Slim Calatrava with straight lugs, advertised as the flattest waterproof watch in the world; two-body case with screw-down back. Best known in its 3520D form with the Clous de Paris hobnail bezel, the ancestor of the 3919 and today’s 5119.

Variants over time

Production years have not been recorded for these variants.

Variants

Hobnail Bezel (3520D)Undated
Stepped Clous de Paris bezel; dials with Arabic or Roman numerals. Second-series examples have the cal. 177. Dated examples: 1987 (white dial, black Roman numerals) and 1995 (porcelain white dial, painted radial Roman numerals).
Hobnail (Clous de Paris) bezelScrew-down caseback

Reference specifications

Brand: Patek Philippe
Model: Calatrava
Reference: 3520
Category: Dress
Production: 1965–?
Case diameter: 32 mm
Date: No
Movement: Manual winding

More specifications (1)

Calibers

Read more

History of the Patek Philippe Calatrava – Part 2: Important ModelsRead more at Monochrome (opens in a new tab)

Patek Philippe Calatrava 3520 · The Index

Flat BezelUndated

More classical versions of the 3520 with a plain flat bezel.

177

Specs shared by all variants. Variant pages show where a variant differs.

All Calatrava references

Previous reference3520D

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