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The Encyclopedia of Horology

Wristwatch · Diver's wristwatch

Squale Ocean Diver wrist watch

Partially verified

This Squale Ocean Diver wristwatch features a 37mm stainless steel case fitted with a calibrated rotating bezel. According to the auctioneer, it houses an unsigned ETA calibre 2783 movement. The grey dial displays baton hour markers, a date aperture at the 3 o'clock position, and dial text reading 'OCEAN DIVER BLANDFORD S.A.' alongside '25 ATMOS' and the Squale shark logo. The watch is mounted on an unsigned black leather strap fitted with a stainless steel pin buckle.

Front view of the Squale Ocean Diver wristwatch on a black strap
Front view of the Squale Ocean Diver wristwatch on a black strap — Fellows. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.fellows.co.uk
Category
Wristwatch · Diver's wristwatch
Maker / attribution
Squale
Reference
Y1545
Catalogue / lot identifier
218
Source-reported date
Not established
Country
Switzerland
Source-reported serial
Y1545

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 Construction

This Squale Ocean Diver wristwatch is identified by the reference number Y1545. It features a 37mm stainless steel case and is equipped with a calibrated bezel.

The watch is fitted to an unsigned black leather strap with a stainless steel pin buckle. According to the auction source, the case displays scratches, marks, and dints.

Evidence for this section
  • “Stainless steel case with calibrated bezel.”
  • “Case width 37mm.”
  • “Reference Y1545.”
  • “Fitted to an unsigned black leather strap with stainless steel pin buckle.”
  • “Case shows scratches, marks and dints.”

Dial and Mechanism

The watch has a grey dial with baton hour markers and a date aperture at the 3 o'clock position. The dial is inscribed with 'OCEAN DIVER BLANDFORD S.A.' below the 12 o'clock marker and '25 ATMOS SQUALE' above the 6 o'clock position.

It houses an unsigned ETA calibre 2783 movement. At the time of the auction, the movement was reported to be functioning, though it exhibits scratches, marks, and tarnishing.

Evidence for this section
  • “Unsigned ETA calibre 2783.”
  • “Grey dial with baton hour markers, date aperture to three.”
  • “Dial is inscribed 'OCEAN DIVER BLANDFORD S.A.' below 12 o'clock and '25 ATMOS SQUALE' above 6 o'clock.”
  • “Movement is currently functioning.”
  • “Movement has scratches, marks and tarnishing commensurate with general wear”

Condition Observations

The rotating bezel is noted as non-functional, as it does not rotate. Additionally, the glass exhibits noticeable scratches and marks, and the hands show tarnishing with discolouration to the luminous paint.

The auctioneer does not guarantee the working order or accuracy of the movement and recommends re-sealing by an authorised technician following the opening of the case back.

Evidence for this section
  • “Rotating bezel does not rotate.”
  • “Glass has noticeable scratches and marks.”
  • “Hands show marks and tarnishing with discolouration to the luminous paint.”
  • “Fellows do not guarantee the working order or accuracy of any lots sold.”
  • “Due to opening of the case back we recommend this watch is re-sealed by an authorised technician”

Open research questions

  • What is the historical significance of the 'Blandford S.A.' branding on Squale dials?
  • Are there specific maintenance procedures recommended for the ETA 2783 movement regarding the bezel mechanism?

Source evidence

Recorded claims and source quotations for Squale Ocean Diver wrist watch
FieldSource-reported valueSource quotation
Case MaterialStainless steel“Stainless steel case with calibrated bezel.”
Case Width37mm“Case width 37mm.”
Movement CalibreETA calibre 2783“Unsigned ETA calibre 2783.”
Reference NumberY1545“Reference Y1545.”
Dial DetailsGrey dial with baton hour markers, date aperture to three“Grey dial with baton hour markers, date aperture to three.”
StrapUnsigned black leather strap with stainless steel pin buckle“Fitted to an unsigned black leather strap with stainless steel pin buckle.”
Total Weight58.4g“Weight: 58.4”

Visible details

  • Red-accented hour and minute hands accompanied by a central seconds hand.
  • Dial is inscribed 'OCEAN DIVER BLANDFORD S.A.' below 12 o'clock and '25 ATMOS SQUALE' above 6 o'clock.
  • Black bezel insert marked with elapsed-time diving numerals and a top pip.

Research qualifications

  • Source notes the rotating bezel does not rotate.
  • Source condition report notes the dial and glass have noticeable marks and scratches, and the hands display tarnishing and discoloured luminous paint.

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

Consulted source

Lot 218 | Squale - an Ocean Diver watch, 37mm.

Reviewed 2026-10-22 · Record 1bcd91aa4b

Terms in this record

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

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