Omega Constellation Ultra-Thin Ref.157.0001 34.0mm 1968

A refined and quietly sophisticated vintage Omega that shows just how advanced the brand’s dress watchmaking was in the late 1960s. The Constellation Ultra-Thin Ref. 157.0001 stands apart from earlier pie-pan Constellations with its cleaner, more modern case architecture and exceptionally slim wrist presence, all while retaining the chronometer pedigree that made the line so respected. With its slender stainless steel case, minimalist silver dial, and crisp applied furniture, this reference wears with the kind of restrained confidence that defines great vintage dress watches. At roughly 34.5mm across and only around 7mm thick, it slips beautifully under a cuff and remains one of the most wearable and tasteful vintage Constellations for everyday formal use today.

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

• Black pencil shaped hands with no lume

• Applied hour indices with matching polished steel finish and black inserts

• Original Omega logo and crisp original wording

• Flat original sapphire crystal

CASE:

• Distinctive ultra-thin dress case with sharp straight lugs and slim bezel

• 34.5mm Diameter (excluding crown)/ 39.5mm Lug-to-lug / 7mm Thickness

• Professionally polished with all sharp edges intact

• Original Omega-signed crown at 3 o’clock

CASEBACK:

• Snap-on caseback with iconicn Constellation observatory medallion

• Professionally polished to perfect vintage condition

• Comes with plastic protective sticker as shown

MOVEMENT:

• Omega Cal.712 – Automatic chronometer movement

• 24 jewels / 43 hours / 19,800 vph

• No date function

• Movement freshly serviced and in excellent condition

• Last serviced: March 2026

• Accuracy: ~0s/day

STRAP:

• Handmade Black crocodile leather strap, 18.0mm lug width

• 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 Ultra-Thin

Year: 1968

Case Material: Stainless steel

Reference: 157.0001

Movement Serial:

Caliber: Omega 712

Diameter: 34.5mm

Lug to lug: 39.5mm

Lug width: 18mm

Thickness: 7mm

Lume: None

Strap: Handmade black crocodile leather strap

Box and papers: No

Accuracy: ~0s/day

Movement type: Automatic chronometer

Crystal: Sapphire

Crown: Original Omega-signed crown

Last service: March 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 bound shipments the PolyWatch polishing kit will not be included in order to mitigate customs delay due to new 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, 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.