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Omega Speedmaster Reduced Chronograph Watch, Automatic, 3510.50 - Stainless Steel



PRISTINE Merchandise is in “like new” condition. There are no signs of wear or any other visible imperfections.  EXCELLENT Merchandise is in exceptionally good condition with very little wear. Any imperfections are described in detail.  VERY GOOD: Merchandise is in very good condition for its age. Older items may exhibit very light patina and wear relative to the age of the product, and more contemporary items will be just short of “excellent”. GOOD: Merchandise is in good condition and typically will appear mildly to moderately used. There may be some surface scratches and/or other imperfections. Older items may exhibit patina and wear related to their age. Please review the item listing for specific details regarding condition.


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The Speedmaster Reduced showcased in today's offering is a prime original example of one of the automatic watches in the Speedmaster line. It remains at very high condition levels - about a 9.5 out of 10, and the luminous has toned just enough to give the watch a bit of a classic look. It has just been freshly fully serviced and it is 100% Omega down to the crystal and waterproofing seal (a $495 value). Accompanying the watch are its original boxes.


Model: Omega Speedmaster Reduced, Ref. 3510.50

No: 57,563,134

Functions: Hours, Minutes, Automatic, Chronograph, Subsidiary Seconds

Dial: Black with painted luminous baton indexes, outer minute/seconds and 1/5th seconds divisions, sunk subsidiary dials for the seconds, the 12-hour and 30-minute registers, mint condition

Hands: Luminous white “baton” hands

Movement type: Cal. 3220, rhodium-plated, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, hack mechanism.

Bracelet: Speedmaster ref. 1469, stainless steel, sized to fit a wrist up to approx. 7 1/4 inches, adjustable, just short of mint condition with two short scratches on one link

Crystal type: Signed Omega, original, excellent condition

Box/Papers: Complete set of boxes and papers. BOX - Original boxes; PAPERS - Original Certificate and Instruction booklets

Return Policy: 7 days from the day it is received

SKU: 21-183865
Accompanied by: Omega
Bracelet/Strap: Stainless Steel
Color: Black
Watch Movement: Automatic
Country of Origin: Switzerland
Authenticity Details: Omega
Case Dimensions (in mm): 38.5mm diameter (excluding crown), 45mm long lug tip-to-tip
Primary Material: Stainless Steel

Domestic and international shipping is by FedEx. All shipments are fully insured.

Please contact Portero Customer Care Department for a return authorization, and ship back item within 7 days of receipt. Items must be properly packaged in comparable box, and in unworn condition.


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When Neil Armstrong took his first step onto the moon proclaiming, "This is one small step for man, one giant leap for mankind," he leapt with the first and only timepiece to land on the moon, Omega.

In La Chaux-de-Fonds, Switzerland 1848, Louis Brandt founded Omega with the foundation of providing innovative and well-crafted timepieces. Now, Omega stands as the official timekeeper of 21 Olympic Games and the official chronometer for NASA.

Omega has been adored by many leading public figures including President John F. Kennedy and Prince William. The Omega brand has also been sponsored by celebrities and athletes such as George Clooney, Daniel Craig, Nicole Kidman, and Michael Phelps.

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