Omega Constellation Ref.157.0001 Cal.712 34.5mm 1968

Available now with a sleek silver satin dial lends this Constellation Ref.157.0001 a soft, measured play of light, framed by the delicate proportions of its ultra-thin case. The two-hand layout leaves an impression of calm, allowing the dial’s texture and the silhouette’s restraint to take centre stage. Within that slender form, Omega’s Cal.712 gives the watch a depth of mechanical character beyond its discreet appearance.

In addition, this timepiece comes freshly serviced with all parts laid out by our professional watchmaker for all to see in the images above. Little to no other dealers do this and it’s a testament to full transparency here at Montre D’or. With the Cal.712 inside running excellently as shown in the timegrapher reading above, just like it was when it left the factory nearly half a century ago.

DIAL:

• Original Silver satin dial in excellent vintage condition
• Pencil Shaped hands with tritium lume inserts
• Applied hour indices with matching tritium lume plots
• Original printed Omega logo and crisp original wording
• Time-only two-hand dial; no date display
• Mineral crystal

CASE:

• Distinctive ultra-thin round case with a narrow bezel and discreet lugs; Stainless steel
• 34.5mm Diameter (excluding crown)/ 39.0mm Lug-to-lug / 7.5mm Thickness
• Professionally polished with all sharp edges intact
• Original Omega-signed crown at 3 o’clock

CASEBACK:

• Press-in caseback with Constellation Observatory medallion
• Professionally polished to perfect vintage condition
• Comes with plastic protective sticker as shown

MOVEMENT:

• Omega Cal.712 – Automatic chronometer-certified movement
• 24 jewels / 43.0-hour nominal power reserve / 19,800 BPH
• Time-only two-hand movement; no seconds hand, day/date or quickset function
• Movement freshly serviced and in excellent condition

STRAP:

• Handmade leather strap, colour and design can be changed upon request depending on availability
• Aftermarket Omega stainless steel buckle

AFTERCARE PACKAGE:

• Comes with a black presentation box + silica gel
• Complimentary PolyWatch crystal polishing kit (for acrylic crystal)
• 6-month warranty (covers non-user damage only)
• Guarantee Certificate with full service details included
• Access to our exclusive post-warranty repair services
• 7-day return policy for peace of mind

SPECIFICS:

Maker: Omega

Model: Constellation

Year: 1968

Case Material: Stainless steel

Reference: 157.0001

Movement Serial: 26530256

Caliber: 712

Diameter: 34.5mm

Lug to lug: 39.0mm

Lug width: 18.0mm

Thickness: 7.5mm

Lume: Tritium

Strap: Handmade leather strap

Box and papers: No original box or papers; Montre D’or black presentation box + Guarantee Certificate included

Accuracy: +2s/day

Movement type: Automatic chronometer

Crystal: Mineral crystal

Crown: Original Omega-signed crown at 3 o’clock

Last service: September 2026

Free express tracked shipping with signature upon delivery. Delivery within Singapore in 1-2 working days. International shipping may take 2–12 working days depending on destination and will be shipped via FedEx/UPS/Aramex/SingPost

Do note respective custom duties might apply which includes the recent US tariffs and are the buyer's responsibility.

Do note that for US and South America bound shipments the PolyWatch polishing kit will not be included in order to mitigate customs delay due to customs requirements

Countries that we do not ship to: Afghanistan, Belarus, the Central African Republic, Chad, Cuba, the Democratic Republic of the Congo, Eritrea, Iran, Iraq, Lebanon, Libya, Israel, North Korea, Oman, Pakistan, Russia, Somalia, South Sudan, Syria, Ukraine and the Crimea, Donetsk, and Luhansk regions of Ukraine.

This is a vintage timepiece and water resistance is not guaranteed. Please avoid contact with water or moisture. Store the watch with dry tissue or silica gel to preserve its condition. We are not liable for water damage post-purchase.