Omega Speedmaster Mark 4.5 Professional

Regular price
$3,950
Regular price
Sale price
$3,950
REF 176.0012
Automatic-winding
42 MM
– Show less
SKU AS11788
Article Number 40960355
ref 176.0012
case size 42 MM
movement Automatic-winding
approximate age 1970s
dial color Black
material Stainless Steel
style Chronograph
category Vintage
bracelet Metal
lug width 22 MM
Includes Stainless steel bracelet with omega signed deployant clasp.
overall condition good condition overall. case and bracelet show moderate wear. dial and matching handset show even patination.
REF 176.0012
Automatic-winding
42 MM
– Show less
SKU AS11788
Article Number 40960355
ref 176.0012
case size 42 MM
movement Automatic-winding
approximate age 1970s
dial color Black
material Stainless Steel
style Chronograph
category Vintage
bracelet Metal
lug width 22 MM
Includes Stainless steel bracelet with omega signed deployant clasp.
overall condition good condition overall. case and bracelet show moderate wear. dial and matching handset show even patination.

Why We Love it

The Mark 4.5 is where the Speedmaster gets technical.

Introduced in the mid-1970s and produced for only a short window, the ref. 176.0012 Speedmaster Mark 4.5 represents one of the more interesting detours in the Mark series, Omega’s ongoing effort to rethink its most famous chronograph for a new decade. If the Moonwatch is purity, the Mark 4.5 is progression.

The 42mm stainless steel tonneau case, with hooded lugs and sweeping radial brushing, continues the muscular design language first explored with the Mark II. Cushion-shaped, solid, architectural. But beneath the 'hesalite' (Omega’s trade name for a type of acrylic crystal), the Mark 4.5 moves in a slightly different direction. The dial adopts the distinctive “TV-style” layout, squaring off the registers and tightening the visual balance while preserving the bold legibility Speedmasters are known for.

Powering it is Omega’s automatic Caliber 1045, derived from Lemania’s celebrated chronograph architecture. A central chronograph seconds hand is paired with the highly practical central chronograph minute counter, turning elapsed timing into something instantly readable. Add a day-date display and the result is a chronograph that feels decisively modern for its era.

Automatic, 48-hour reserve, 30m water resistance, solid caseback, steel bracelet—this was a Speedmaster designed for the realities of the 1970s: daily wear, real utility, unmistakable presence.

Within the Mark lineage, the Mark 4.5 represents the Speedmaster at its most experimental. A moment when Omega was comfortable pushing its icon into new territory.

Same mission. Entirely different machine. A Speedmaster for collectors who enjoy the deeper cuts.

Brand Story

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The story of Omega is one that captivates generations of horological devotees. The second-largest watchmaker in the world in terms of annual turnover, the Bienne-based firm has been continuously producing watches since 1848, which it does today under the auspices of the Swatch Group.

Founded in La-Chaux-de-Fonds, Switzerland as La Generale Watch Co, Omega was well ahead of the horological curve from the beginning, developing the first minute-repeating wristwatch in 1892 as well as the eponymous “Omega” caliber in 1894. This 19-ligne movement was revolutionary in that its parts could be replaced by any watchmaker in the world without modification, while its winding and time-setting via the crown provided an industry standard.

Omega became the timepiece supplier of choice for the British Royal Flying Corps in 1917, while the Americans followed suit in 1918, choosing their watches for the U.S. Army. Awards for precision chronometry became almost commonplace, while 1932 saw them become the first watch brand to time an entire Olympic Games. Their Marine, which debuted the same year, is regarded as the first commercially available diver’s watch.

During the Second World War, Omega supplied well over 100,000 timepieces to British forces, making it the largest watch supplier to the British and her allies. These watches, from the unique 6B/159 to the famed “Dirty Dozen” W.W.W, remain highly collectible today.

1948 saw the launch of the original Seamaster: Built upon the tool watch legacy of the brand’s timepieces from the War, it’s since become a byword for reliability and legibility, both as a dress watch and, more recently, as a serious diver’s tool. The Speedmaster, released in 1957 and originally marketed for the auto-racing market, first rocketed to space on the wrist of American astronaut Wally Schirra in 1962. However, it became a household name when, in 1969, it accompanied Buzz Aldrin on the Moon, and later helped save the space-stranded crew of Apollo 13 in 1970 by timing a critical rocket burn.

Today, Omega’s watches — all of which feature in-house movements — run the gamut from svelte dress pieces to the venerable Speedmaster in all its guises. Providing an unquestionable value proposition, Omega is a brand that deserves to be at the center of every serious watch lover’s collection.

A:S Guarantee

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Our Pledge

Analog:Shift stands behind the authenticity of our products in perpetuity.

Condition

Since our pieces are vintage or pre-owned, please expect wear & patina from usage and age. Please read each item description and examine all product images.

Warranty

We back each Analog:Shift vintage timepiece with a two-year mechanical warranty from the date of purchase.

International Buyers

Please contact us prior to purchase for additional details on shipping and payment options.

Shipping & Returns

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All of our watches include complementary insured shipping within the 50 states.

Most of our products are on hand and will ship directly from our headquarters in New York City. In some cases, watches will be shipped directly from one of our authorized partners.

We generally ship our products via FedEx, fully insured, within 5 business days of purchase. An adult signature is required for receipt of all packages for insurance purposes. Expedited shipping is available at an additional cost. We are also happy to hand deliver your purchase in Manhattan or you may pick it up at our showroom.

Returns must be sent overnight or by priority international delivery, fully insured and paid for by the customer. A restocking fee may apply. Watches must be returned in the same condition as initially shipped.

We welcome international buyers, please contact us prior to purchase for additional details on shipping and payment options.

Make it yours will fit standard 22mm watches

A wrist wearing the Analog:Shift Wraith Black Executive Strap, watch face turned away. The person has a blue sleeve, with brown leather and wooden items visible in the background.

Wraith Black Executive Strap

Regular price
$89
Regular price
Sale price
$89
A close-up shows a wrist wearing the Analog:Shift Clark Grey Distressed Strap with a silver buckle. The watch face is hidden, and the person wears a dark green sleeve against a brown background.

Clark Grey Distressed Strap

Regular price
$89
Regular price
Sale price
$89
Omega Speedmaster Mark 4.5 Professional

Omega Speedmaster Mark 4.5 Professional

Regular price
$3,950
Regular price
Sale price
$3,950
Omega Speedmaster Mark 4.5 Professional
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