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The Encyclopedia of Horology

Wristwatch · Octagonal lady's wristwatch

Rolex Oyster 9ct gold octagonal cased lady's wristwatch

Partially verified

This lady's wristwatch features an octagonal 9ct gold case dating to circa 1930 according to the auctioneer. The source reports a circular jewelled lever movement detailed 'Rolex Extra Prima' and timed to six positions for all climates. The interior caseback is marked '9 C 25491'. Visually, the watch has a circular silvered dial signed 'ROLEX OYSTER' with black Arabic numerals, an outer minute track, and a subsidiary seconds register at 6 o'clock. The octagonal case incorporates a fluted bezel and a textured winding crown, fitted to a stitched tan leather strap.

Rolex Oyster 9ct gold octagonal cased lady's wristwatch on a leather strap
Rolex Oyster 9ct gold octagonal cased lady's wristwatch on a leather strap — Bellmans. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
app.bellmans.co.uk
Category
Wristwatch · Octagonal lady's wristwatch
Maker / attribution
Rolex
Reference
Not recorded
Catalogue / lot identifier
2380
Source-reported date
circa 1930
Country
Not established

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 External Features

The watch features an octagonal case described as 9ct gold. The design includes a circular fluted bezel and a winding crown located at the 3 o'clock position. The timepiece is fitted to a tan leather strap.

The interior of the caseback is reported to bear the inscription '9 C 25491'. This detail is based on auction house reporting.

Evidence for this section
  • “9ct gold octagonal cased lady's wristwatch”
  • “detailed within the caseback 9 C 25491”

Dial Details

The watch has a silvered dial signed 'ROLEX OYSTER'. The dial features black Arabic numerals for hour markers and an outer minute track.

A subsidiary seconds register is situated at the 6 o'clock position.

Evidence for this section
  • “the signed silvered dial with black Arabic”
  • “Silvered dial signed 'ROLEX OYSTER' beneath 12 o'clock”
  • “Black Arabic numeral hour markers and outer minute divisions”
  • “Subsidiary seconds register at 6 o'clock”

Movement

The timepiece is equipped with a circular jewelled lever movement. The movement is inscribed 'Rolex Extra Prima' and noted as timed to six positions for all climates.

The movement is not visible in the provided source imagery, and these details are derived from the auction record.

Evidence for this section
  • “the circular jewelled lever movement detailed Rolex Extra Prima, timed 6 positions for all climates”

Open research questions

  • What is the significance of the '9 C' prefix within the interior caseback sequence?
  • Does the 'Extra Prima' designation correspond to specific caliber adjustments or base movement types utilized by the manufacturer during this period?

Source evidence

Recorded claims and source quotations for Rolex Oyster 9ct gold octagonal cased lady's wristwatch
FieldSource-reported valueSource quotation
Case Material and Shape9ct gold octagonal cased“9ct gold octagonal cased lady's wristwatch”
Datecirca 1930“circa 1930”
Movement InscriptionRolex Extra Prima, timed 6 positions for all climates“the circular jewelled lever movement detailed Rolex Extra Prima, timed 6 positions for all climates”
Caseback Inscription9 C 25491“detailed within the caseback 9 C 25491”
Estimated Datecirca 1930“circa 1930”
Hammer Price£1,050“Hammer price: £1,050”

Visible details

  • Octagonal gold-tone metal case with an integrated circular fluted bezel
  • Silvered dial signed 'ROLEX OYSTER' beneath 12 o'clock
  • Black Arabic numeral hour markers and outer minute divisions
  • Subsidiary seconds register at 6 o'clock
  • Fitted with a tan textured leather strap with light contrast stitching
  • Fluted winding crown at the 3 o'clock position

Research qualifications

  • Internal movement and inner caseback markings are not visible in the photograph and rely entirely on source reporting
  • Source catalog text cuts off abruptly after 'the signed silvered dial with black Arabic'

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

Consulted source

Reviewed 2026-10-25 · Record 776548c73f

Terms in this record

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