Skip to content
The Encyclopedia of Horology

Wristwatch · Automatic sports wristwatch with date

Patek Philippe Ref. 3700/1A Nautilus Jumbo Wristwatch

Partially verified

This Patek Philippe Nautilus Jumbo reference 3700/1A is a stainless steel automatic wristwatch manufactured in 1977. According to Phillips, the watch measures 42 mm in diameter and is paired with an integrated stainless steel bracelet and deployant clasp. It is powered by the 36-jewel automatic caliber 28-255C, featuring hours, minutes, and a date display at the 3 o'clock position. The source notes that the timepiece was serviced by Patek Philippe in 2021, at which time it was fitted with a new old stock dial.

Front view of the Patek Philippe Nautilus Ref. 3700/1A showing the dial, bezel, and integrated bracelet
Front view of the Patek Philippe Nautilus Ref. 3700/1A showing the dial, bezel, and integrated bracelet — Phillips. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.phillips.com
Category
Wristwatch · Automatic sports wristwatch with date
Maker / attribution
Patek Philippe
Reference
3700/1A
Catalogue / lot identifier
42
Source-reported date
1977
Country
Switzerland
Source-reported serial
1’303’790

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Identity and Provenance

This Patek Philippe Nautilus Jumbo, reference 3700/1A, is reported as having been produced in 1977. The watch is accompanied by an extract from the archives, which provides confirmation of its 1977 production and its sale on August 30, 1977.

The case measures 42 mm in diameter.

Evidence for this section
  • “Year 1977”
  • “Reference No 3700/1A”
  • “Accompanied by Patek Philippe Extract from the Archives confirming production of the present watch in 1977 and its subsequent sale on August 30th, 1977.”
  • “Dimensions 42mm Diameter”

Construction and Aesthetic Details

The timepiece features an integrated stainless steel bracelet and a deployant clasp. The bezel is finished with vertical satin-brushing and polished bevelled edges.

The dial displays a horizontal embossed pattern with baton hour markers and baton hands. A date aperture is located at the 3 o'clock position.

Evidence for this section
  • “Bracelet/Strap Stainless steel Patek Philippe bracelet”
  • “Clasp/Buckle Stainless steel Patek Philippe deployant clasp”
  • “Bezel features vertical satin-brushed finishing with polished bevelled edges.”
  • “Horizontally embossed dark dial with baton hour markers and baton hands.”
  • “Date window displays the numeral '3' at the 3 o'clock position.”

Mechanism and Service History

The watch is powered by the automatic caliber 28-255C, a 36-jewel movement.

The watch was serviced by Patek Philippe in 2021, at which time a new old stock dial was installed.

Evidence for this section
  • “Calibre Automatic, cal. 28-255C, 36 jewels”
  • “Recently serviced by Patek Philippe in 2021 and fitted with a new old stock dial”

Open research questions

  • What are the specific visual differentiators between the original 1977 dial and the new old stock service dial installed in 2021?

Source evidence

Recorded claims and source quotations for Patek Philippe Ref. 3700/1A Nautilus Jumbo Wristwatch
FieldSource-reported valueSource quotation
Reference3700/1A“Reference No 3700/1A”
Movement Number1’303’790“Movement No 1’303’790”
Case Number532’923“Case No 532’923”
CalibreAutomatic, cal. 28-255C, 36 jewels“Calibre Automatic, cal. 28-255C, 36 jewels”
Dimensions42mm Diameter“Dimensions 42mm Diameter”
Case MaterialStainless steel“Material Stainless steel”
Dial Service HistoryFitted with a new old stock dial during 2021 service“Recently serviced by Patek Philippe in 2021 and fitted with a new old stock dial”
Maximum Bracelet Length185mm“max overall length 185mm”

Visible details

  • Horizontally embossed dark dial with baton hour markers and baton hands.
  • Bezel features vertical satin-brushed finishing with polished bevelled edges.
  • Date window displays the numeral '3' at the 3 o'clock position.
  • Integrated stainless steel bracelet with central polished connecting elements and brushed links.

Research qualifications

  • Source notes the dial is a service replacement ('new old stock dial') installed in 2021 rather than the 1977 original.
  • Case back and movement interior are not visible in the photograph.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Patek Philippe The New York Watch Auction: XI

Reviewed 2026-10-22 · Record 4e0b3b65db

Terms in this record

Glossary explanations for terms named in this object’s record.