Unworn, Omega Constellation Observatory, Ref# 140.13.39.21.10.001, box and papers.

OMEGA Constellation Observatory, ref. 140.13.39.21.10.001, revives the precision-focused spirit of the 1952 Constellation in a 39.4 mm polished-brushed O-MEGASTEEL case with distinctive faceted dog-leg lugs. Its green Pie-Pan dial features a sun-brushed centre, opaline facets with eight embossed grooves, applied OMEGA logo and Constellation star, plus diamond-polished 18K white gold hands and indexes. Calibre 8914 delivers METAS-certified Master Chronometer performance. Condition: unworn in like-new condition, comes with original box and papers, including dated warranty documents. Its elegant profile blends vintage-inspired detail with modern precision and comfort

TECHNICAL DATA

• MOVEMENT

• OMEGA calibre 8914, self-winding Co-Axial
• METAS-certified Master Chronometer
• Anti-magnetic to 15,000 gauss
• Free-sprung balance with silicon balance spring
• Two barrels in series; bidirectional automatic winding
• Frequency: 3.5 Hz / 25,200 vph; 38 jewels
• Power reserve: 60 hours
• Functions: hours, minutes and time-zone adjustment
• Rhodium-plated rotor and bridges; Geneva waves in arabesque

• CASE

• Polished-brushed O-MEGASTEEL case
• Faceted dog-leg lugs and clear-cut faceted bezel
• Green Pie-Pan dial; sun-brushed centre and opaline facets
• Diamond-polished 18K white gold hands and indexes
• Domed, bevelled sapphire crystal, anti-reflective on both sides
• Transparent sapphire caseback with Observatory emblem
• Water resistance: 3 bar / 30 m / 100 ft

• DIMENSIONS

• Diameter: 39.4 mm
• Thickness: 12.23 mm
• Lug-to-lug: 47.20 mm
• Between lugs: 19 mm
• Approx. total weight: 71 g

• STRAP

• Dark green alligator leather strap
• Alligator leather surface; grained calf leather underside
• Polished stainless-steel pin buckle

All Pre-Owned Rolex watches are guaranteed to be 100% genuine and certified authentic. Certificates are issued by Watch CSA, the industry's leading independent authority on watch authentication.

All orders are prepared and fulfilled only after payment has been received and fully processed. Once confirmed, orders are typically shipped within 1–3 business days (for models that require sourcing, this timeframe might be longer).

We ship via FedEx Overnight Priority with an Adult Signature Requirement, meaning someone 21 years or older must be present at the delivery address to sign for the package.

For full details regarding shipping options, delivery timelines, and rates, please review our Shipping Policy.

We offer a 3-day return period on eligible watches, starting from the date of delivery. To qualify, the watch must be returned in the same condition as received—unworn, unaltered, and with all original packaging, tags, and accessories included.

All returns must be approved in advance. Once received and inspected, refunds are processed promptly back to the original payment method.

For full details on eligibility, conditions, and the return process, please refer to our Return Policy.