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The Encyclopedia of Horology

Wristwatch · Diver's wristwatch

Blancpain Fifty Fathoms Trilogy Collection Wristwatch

Partially verified

This Blancpain Fifty Fathoms Trilogy Collection watch is a stainless steel self-winding diver's timepiece, numbered 597 and produced circa 2010. It features a 40 mm diameter case with a combination of polished and brushed surfaces, curved lugs, and a unidirectional revolving bezel graduated for decompression times. The black dial includes applied luminous steel baton indexes, Arabic numerals, and an aperture for the date positioned between 4 and 5 o'clock. Luminous steel epée hands indicate the time. The movement is the self-winding Caliber 1151, which is rhodium-plated, features 26 jewels, and includes a gold rotor with fausses côtes decoration. The watch is presented on a stainless steel link bracelet with a double deployant clasp and is water-resistant to 1000 feet. The total thickness is 13 mm, and the case back is screwed down and engraved.

The Blancpain Fifty Fathoms Trilogy Collection wristwatch viewed from the front, showing the dial, bezel, and steel bracelet.
The Blancpain Fifty Fathoms Trilogy Collection wristwatch viewed from the front, showing the dial, bezel, and steel bracelet. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Diver's wristwatch
Maker / attribution
Blancpain
Reference
Not recorded
Catalogue / lot identifier
48
Source-reported date
circa 2010
Source-reported place
Not established
Source-reported serial
597

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

Case and Dial

The timepiece features a three-body stainless steel case with both polished and brushed finishes, measuring 40 mm in diameter and 13 mm in thickness. The design incorporates curved lugs and a domed sapphire crystal, providing protection for the dial. A significant functional element is the unidirectional revolving bezel, which is graduated for tracking decompression times during diving activities.

The black dial is fitted with applied luminous steel baton indexes and Arabic numerals. Luminous steel epée hands are used for time indication. The dial displays a date aperture situated between the 4 and 5 o'clock positions. The case back is screwed down and features an engraving identifying the piece as part of the 'Trilogy Collection' and bearing the number 597. Signature markings are present on the case band.

Evidence for this section
  • “Three-body, polished and brushed, curved lugs, unidirectional revolving graduated bezel for the decompression times”
  • “screwed- down case back engraved with "Trilogy Collection No.597,”
  • “Black with applied luminous steel baton indexes and Arabic numerals, outer minutes/seconds divisions aperture for the date between 4 and 5.”

Movement and Escapement

The watch is powered by the Caliber 1151, a self-winding movement featuring 26 jewels. The movement is finished with rhodium plating and decorated with fausses côtes. A gold rotor is integrated into the mechanism.

The escapement is a straight-line lever type, and the balance is a monometallic version adjusted to 5 positions. The movement also includes a shock absorber and a self-compensating flat balance-spring to maintain timing accuracy and durability under varying conditions.

Evidence for this section
  • “Cal. 1151, rhodium-plated, 26 jewels, fausses côtes decoration, straight-line lever escapement”
  • “monometallic balance adjusted to 5 positions, shock absorber, self-compensating flat balance-spring, gold rotor.”

Signatures and Provenance

The internal and external components of the watch are marked to identify its origin and individual status. The catalog description confirms that the dial, case, and movement are signed by the manufacturer. The watch is accompanied by its original fitted box, as noted in the listing.

The piece is part of the Fifty Fathoms Trilogy Collection, and its individuality is established by the serial number 597, which is inscribed on both the case back and the case band, serving as an identifier for this specific unit.

Evidence for this section
  • “Dial, case and movement signed.”
  • “Accompanied by a fitted box.”
  • “No. 597.”

Open research questions

  • Are there specific archival records from Blancpain that confirm the exact assembly date for unit number 597?
  • What is the specific material composition of the bracelet links beyond the general description of stainless steel?

Source evidence

Recorded claims and source quotations for Blancpain Fifty Fathoms Trilogy Collection Wristwatch
FieldSource-reported valueSource quotation
ManufacturerBlancpain“Blancpain”
ModelFifty Fathoms, 300m/1000ft“Fifty Fathoms, 300m/1000ft”
Serial Number597“No. 597”
Datecirca 2010“Made circa 2010.”
MovementCaliber 1151“Cal. 1151”
Jewel Count26“26 jewels”
Case Diameter40 mm“DIAM. 40 mm.”
Case Thickness13 mm“THICKNESS 13 mm.”

Visible details

  • Unidirectional revolving bezel with large embossed numerals
  • Date aperture located between 4 and 5 o'clock
  • Stainless steel link bracelet with double deployant clasp

Research qualifications

  • The specific water resistance rating of 1000 feet is a claim by the manufacturer, not verified by the cataloguer.
  • The exact date of manufacture is stated only as circa 2010.

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

Consulted source

BLANCPAIN FIFTY FATHOMS TRILOGY COLLECTION STEEL Blancpain, "Fifty Fathoms, 300m/1000ft," No. 597. Made circa 2010. Fine, center seconds, self-winding, water resistant to 1000 ft, stainless steel diver's wristwatch with date and a stainless steel Blancpain link bracelet with double deployant clasp. Accompanied by a fitted box.

Reviewed 2026-10-26 · Record c94af2040a

Terms in this record

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

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