Patek Philippe Calatrava Ref 3520D
Record status
Individual type · partial
Period
circa first half of the 1970s
Maker / issuer
Patek PhilippeThis Patek Philippe Calatrava reference 3520D is a dress watch featuring an 18k white gold 32mm case with a Clous de Paris hobnail bezel and a screw-down caseback.
The watch is powered by the ultra-thin, manually wound Patek Philippe calibre 175 movement. The dial is finished in a blue soleil sunburst pattern and features applied baton hour markers with slender, non-luminous dark hands. The design omits a seconds hand and a date display. The watch is presented on a light grey leather strap, which is original to the vendor's listing, equipped with a Patek Philippe 18k white gold pin buckle.
The movement is reported to have been fully serviced by a professional watchmaker as part of the offering process.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Dial
- Blue soleil
- Type
- Dress watch
- Bezel
- Clous de Paris
- Buckle
- 18k white gold
- Serial
- 270xxxx
- Movement
- Calibre 175
- Reference
- 3520D
- Case Material
- 18k white gold
- Place recorded
- Switzerland
- Maker / attribution
- Patek Philippe
Design
- Visible features
- • Clous de Paris hobnail pattern on the bezel • Blue sunburst dial finish • Applied baton hour markers • Manually wound movement without seconds indication
- Historical Context
- The Calatrava line was introduced by Patek Philippe in 1932 with the reference 96. The reference 3520 series was introduced during the 1960s as a slim iteration of this design. In 1972, the reference 3520D variant was released, reintroducing the Clous de Paris hobnail bezel to the Calatrava collection. The specific serial number 270xxxx associated with this example dates the object to the first half of the 1970s.
- Case and Dial Design
- The Patek Philippe reference 3520D features a 32mm case constructed from 18k white gold. The design is characterized by straight lugs and a distinctive Clous de Paris hobnail-patterned bezel. The case construction includes a screw-down caseback, contributing to the slim profile of the watch. The dial is finished in a blue soleil pattern, which creates a sunburst effect that varies in appearance depending on lighting conditions. The layout is minimalist, featuring applied baton hour markers and slender dark hands. The watch design intentionally excludes both a seconds hand and a date complication to maintain a clean aesthetic.
- Movement and Mechanical Details
- The watch is equipped with the calibre 175, an ultra-thin, manual-winding movement produced by Patek Philippe. The mechanical components are housed within the 18k white gold case. The vendor reports that the movement has been fully checked and regulated by an experienced professional watchmaker to ensure operational status.
Identification
- Reference
- 3520D
- Serial number
- 270xxxx
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Serial number is partially redacted as 270xxxx
- Research required: Exact service history prior to the current vendor's assessment is not provided