Omega Constellation Calendar Ref.14393-2-SC Cal.561 35.0mm 1959

This exceptional 1961 example features a flawless white sunburst dial accented by rare onyx-inlaid indices and striking dauphine hands with black inserts, creating a beautiful play of light at every angle. Powered by the COSC-certified Cal.561 automatic movement and housed in its classic 35mm case with the iconic gold observatory medallion caseback, it offers both technical pedigree and timeless design—making it a true cornerstone piece for any serious vintage collection.

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.561 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 white sunburst crosshair dial in flawless condition

• Dauphine hands with black inserts, clean and sharp

• Applied faceted indices with rare black onyx inlays

• Applied Omega logo and Constellation star with crisp original wording

• Domed acrylic crystal, Omega-signed at center

CASE:

• Iconic lyre lug case design

• 35.0mm Diameter (excluding crown) / 43.0mm Lug-to-lug / 10.5mm Thickness

• Professionally polished with all sharp edges intact

• Original Omega-signed crown at 3 o’clock

CASEBACK:

• Screwdown caseback with solid 14k gold Observatory medallion

• Professionally polished to perfect vintage condition

• Comes with plastic protective sticker as shown

MOVEMENT:

• Omega Cal.561 – Automatic (COSC Chronometer)

• 24 Jewels / ~50 Hours Power Reserve / 19,800 BPH

• Semi-quickset date function (advance via repeated crown pulls)

• Movement freshly serviced and in excellent condition

• Last serviced: April 2026

• Accuracy: +1.0s/day

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 Calendar

Year: 1959

Case Material: Stainless Steel

Reference: 14393-2-SC

Movement Serial: 17217026

Caliber: 561

Diameter: 35.0mm

Lug to lug: 43.0mm

Lug width: 18.0mm

Thickness: 10.5mm

Lume: Tritium

Strap: Handmade leather strap

Box and papers: No

Accuracy: +1.0s/day

Movement type: Automatic

Crystal: Original Omega-signed domed acrylic

Crown: Original Omega-signed crown

Last service: April 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.