Wristwatch · Quartz & electronic watch

Omega Constellation Quadra Ref. 7951233 18 Carat Gold Wristwatch

Partially verified

This is an Omega Constellation Quadra lady's wristwatch, reference 7951233, featuring an 18 carat gold rectangular case measuring 19 mm across. According to the auctioneer, the watch is powered by a quartz Calibre 1376 movement with 5 jewels, numbered 57371286. It features a square mother-of-pearl dial set with four diamond hour markers and is attached to a silver satin and leather-backed Omega strap with a gold pin buckle. The screwed-down case back is reported to be held by four screws and stamped with a 0.750 common control hallmark. The source notes the case, dial, movement, crown, strap, and buckle are signed by Omega.

Front view of the Omega Constellation Quadra 18 carat gold wristwatch on silver satin strap — Dreweatts 1759 Ltd. Rights pending — permission not yet requested. Original source

Catalogue identity

Source: auctions.dreweatts.com
Category: Wristwatch · Quartz & electronic watch
Form: Lady's quartz wristwatch
Maker / attribution: Omega
Reference: 7951233
Catalogue / lot identifier: 124
Source-reported date: Not established
Source-reported place: Switzerland
Source-reported serial: 57371286

Maker profile: Omega — history, key models and current watchmaking.

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

Identification and Design

This is an Omega Constellation Quadra, reference 7951233, described as a lady's 18 carat gold wristwatch. The watch features a rectangular 18 carat gold case, which includes a screwed-down case back secured by four screws.

The timepiece is fitted with an Omega silver satin and leather-backed strap, which includes a gold pin buckle. The watch is recorded with a gross weight of 31g.

Evidence for this section

“OMEGA, CONSTELLATION QUADRA, REF. 7951233, A LADY'S 18 CARAT GOLD WRISTWATCH”
“Case: 18 carat gold case, screwed down case back with four screws, stamped with 0.750 common control mark”
“Strap: Omega silver satin and leather backed strap with gold pin buckle”
“31g gross”

Dial and Movement

The watch features a mother-of-pearl dial set with four diamond hour markers. According to the auctioneer, the watch is powered by a quartz Calibre 1376 movement with 5 jewels, identified by the serial number 57371286.

The auctioneer notes that the case, dial, movement, crown, strap, and buckle are signed by Omega.

Evidence for this section

“Dial: Mother of pearl with diamond markers”
“Movement: Cal. 1376, quartz, 5 jewels”
“A LADY'S 18 CARAT GOLD WRISTWATCH, NO. 57371286”
“Signed: Case, dial, movement, crown, strap, buckle”

Condition and Observations

The auctioneer's condition report notes that the movement was functioning and had a new battery fitted on July 7, 2026. The strap shows visible signs of wear, including marks, creasing, and discolouration.

The case and crown are reported to show light scratches and marks. The auctioneer recommends that the watch be re-sealed by a qualified technician due to the opening of the case back for inspection.

Evidence for this section

“New battery fitted 07.07.26”
“Strap shows wear with visible marks, creasing and discolouration.”
“Case shows light scratches and marks.”
“Due to opening of the case back we recommend this watch is re-sealed by a qualified technician”

Open research questions

What is the significance of the 0.750 common control mark regarding the origin and assay of the gold?
Are there specific maintenance protocols for the quartz Calibre 1376 movement beyond battery replacement?
Can the serial number 57371286 be verified through Omega's archive services for production date confirmation?

Source evidence

Recorded claims and source quotations for Omega Constellation Quadra Ref. 7951233 18 Carat Gold Wristwatch
Field	Source-reported value	Source quotation
Movement	Cal. 1376, quartz, 5 jewels	“Movement: Cal. 1376, quartz, 5 jewels”
Case	18 carat gold case, screwed down case back with four screws, stamped with 0.750 common control mark	“Case: 18 carat gold case, screwed down case back with four screws, stamped with 0.750 common control mark”
Dial	Mother of pearl with diamond markers	“Dial: Mother of pearl with diamond markers”
Dimensions	19mm	“Size: 19mm”
Strap	Omega silver satin and leather backed strap with gold pin buckle	“Strap: Omega silver satin and leather backed strap with gold pin buckle”
Hallmark	0.750 common control mark	“stamped with 0.750 common control mark”
Case Dimensions	19mm	“Size: 19mm”

Visible details

Rectangular yellow gold case featuring four side claw-like accents characteristic of the Constellation design
Square light dial with four diamond-set hour markers and two dark central hands
Silver-toned fabric-textured strap showing visible surface wear and cracking near the case lugs

Research qualifications

Movement and case back are not visible in the primary photograph; internal details rely entirely on auctioneer cataloguing
Strap shows visible surface wear, cracking, and discolouration

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