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  5. Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional
Pre-Owned Omega Speedmaster Mark 4.5 Professional

Pre-Owned Omega Speedmaster Mark 4.5 Professional 40960355/AS11788

$3,950.00  Delivery for this product is estimated at 1-2 Business Days

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For more details on this product, please contact 1-800-462-9677, Website Catalog or click here for live assistance.
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Description
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.
Delivery & Returns

Standard Delivery (Est 1-3 Days) - Free

Our secure shipping service delivers Monday - Saturday between 8:00 a.m. and 6:00 p.m. For security purposes, every delivery requires an adult signature; Mayors does not deliver to P.O. boxes nor third party forwarding services. To find out more about delivery, click here. Tracking information is available upon request.

If you have any questions or concerns regarding your order, Mayors’ E-Commerce team can be reached at 1-800-4-MAYORS (1-800-462-9677), option 1, during the following times (Eastern Time):

- Monday - Saturday: 9:00 a.m. – 7:00 p.m

- Sunday: 9:00 a.m. – 5:00 p.m

- Closed Easter Sunday, Thanksgiving Day and Christmas day

Alternatively, you can email the E-commerce team at ecommerce@mayors.com.

Return Policy

Our commitment to you does not end at delivery. We offer the following return services to make your experience as pleasant as possible.

10-Day Returns For Timepieces:

Timepieces purchased online can be returned or exchanged within 10 days from when they are shipped or collected.

30-Day Returns For All Other Purchases:

All other online purchases can be returned or exchanged within 30 days from when they are shipped or collected.

On presentation of the original receipt, your purchases may be returned or exchanged at any of our store locations. Alternatively, you may elect shipping to our facility with all the original paperwork. All refunds must be credited to the same tender used for the original purchase. To return the online purchases through secure shipping service, please contact our client service team who will provide you the shipping label.

All returns or exchanges must be in new, unworn condition, with no scratches or markings, not sized or adjusted and in their original packaging and with warranty cards / certificated and instruction booklets.

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