OMEGA "Speedmaster Professional Mark II" Steel Watch

OMEGA SPEEDMASTER PROFESSIONAL MARK II Ref. 145.014 – Caliber 861 (Lemania 1873) – Circa 1970.

Recently serviced at ABP Concept, Paris (full service) – Excellent condition – Watch comes with its original box.

The direct successor to the “Moonwatch,” designed for the modern era.

Introduced in 1969, the same year as the Apollo 11 moon landing, the Speedmaster Professional Mark II symbolizes Omega’s commitment to ushering its legendary chronograph into a new era.

While the “Moonwatch” epitomizes the space race, the Mark II embodies design and modernity—more streamlined, more robust, and more contemporary.

Its one-piece, satin-finished steel tonneau case—typical of the 1970s—is a feat of ergonomics and Style: a balance between sportiness and technical elegance. The tachymeter scale, now integrated beneath the crystal, offers enhanced readability and protection—a defining innovation of this generation.

Reference: 145.014

Type: Wristwatch with Bracelet

Year: Circa 1970

Movement: Manual-winding mechanical, Omega Caliber 861, derived from the Lemania 1873, identical to that of the post-1968 “Moonwatch”—a robust, precise, and legendary movement that succeeded the Caliber 321. Frequency: 21,600 vph Power reserve: approximately 48 hours. Special feature: This caliber succeeded the 321 and was used in the “Moonwatch” models until 1996.

Case: brushed steel, tonneau-shaped, screw-down caseback engraved with a seahorse (some wear). Diameter: 41 mm.

Dial: original matte black with luminescent baton hour markers, three sub-dials (seconds at 9 o’clock, hours at 6 o’clock, and minutes at 3 o’clock), tachymeter scale integrated beneath the crystal, uniform tritium patina on the hour markers and hands.

Crystal: new Omega tachymetric crystal (original crystal retained)

Bracelet: Original Omega steel bracelet with signed folding clasp. Diameter: 19 cm.

Case number: 145.014

Service & Condition

Watch fully serviced at ABP Concept (Paris) in September 2025 (invoice provided):

Complete chronograph service,

Replacement of the Omega tachymeter crystal,

Cleaning and adjustment,

Very light polishing that preserves the original brushed finish,

Original dial and hands preserved, not restored.

Watch is fully functional and accurate.

Certificate of authenticity available upon request (to be provided by Atelier des Tocantes, Paris).

Comes with:

Original Omega box.

Original tachymeter glass preserved.

Service invoice (ABP Paris, 2025).

Certificate of authenticity available.

Expert’s Comments

A true icon of 1970s watch design, the Speedmaster Professional Mark II embodies an exciting transition in Omega’s history: the shift from the space race to a modern aesthetic. It shares the same legendary movement as the post-1968 Moonwatch—the Caliber 861, derived from the Lemania 1873—while asserting a bolder, more contemporary personality.

This piece features a perfectly uniform tritium patina, an exceptionally well-preserved original dial, and a slightly satin-finished case (with a few minor scratches) consistent with the Antique period finish.

Serviced by a leading workshop, it comes with its original box and Antique Omega crystal, combining authenticity, reliability, and Vintage charm.

Highlights - Caliber 861, derived from the Lemania 1873, identical to the post-1968 Moonwatch. - Complete ABP service (September 2025). - Original dial and hands, uniform tritium patina. - Antique Omega box. - New tachymeter crystal (original retained). - Fully functional piece, ready to wear and collect.

A Speedmaster like no other Designed to succeed the Moonwatch while embodying modernity, the Mark II is a pivotal watch: the perfect synthesis of space heritage and 1970s design. A fairly rare piece in this condition, having undergone a thorough service, it is at once historic, elegant, and resolutely timeless.