Skip to product information
Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001
  • Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001
  • Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001
Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001

Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001 Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna…

Reference 310.55.42.50.13.001

Full watch configuration

Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001

$48,875.00
Requested accessories
Full Set

By Omega

Sourced to order. We confirm the watch, condition and final price before purchase. Reference images shown.

Ask a question WhatsApp
Meet our family team Miami Beach appointments Customer reviews Buyer protection Watch services
Trade toward this watch Sell a watch like this

Eligible watches: 90-day returns for store credit only. Brand-new watches and other exclusions are final sale. Return terms.

Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001

Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001

Current Catalogue Asking Price:

Your Offer

$

Submit your offer for review. Availability and the final price require confirmation.

Preferred Contact Method
I have a trade-in / add a note

Reserve with $200

Omega Speedmaster Moonwatch Professional Chronograph 42mm Sedna Gold/Diamonds Brown Dial 310.55.42.50.13.001

Catalogue watch price: $48,875.00 USD

Your $200 deposit is applied to the watch’s purchase price. It is refundable only if Bizak & Co. cannot fulfill your order.

Estimated remaining balance: $. Pay by bank wire or cryptocurrency after we confirm your watch and final invoice. Shipping and applicable taxes are additional.

Shipping details · Return terms

Watch shipping is paid with the final balance: $100 for U.S. overnight delivery or $500 internationally. Applicable taxes and import charges are additional.

After payment, our team starts the tailored search and contacts you to confirm the specific watch and final invoice. A deposit does not guarantee a unit, the listed price or a delivery date.

Need installments? Check eligibility before paying a deposit.

Speak with a Bizak & Co. specialist about this piece

|Call or Text

The Omega Speedmaster Moonwatch Professional Chronograph reference 310.55.42.50.13.001 is a 42mm luxury chronograph crafted in Omega's proprietary Sedna Gold, featuring a rich brown dial set with diamond indexes and a diamond-set bezel. The matching Sedna Gold bracelet completes an exceptionally cohesive and opulent presentation that elevates the iconic Moonwatch silhouette to haute-horlogerie status.

This reference stands apart as one of the most lavish executions of the storied Speedmaster Moonwatch line, combining the watch's legendary case architecture with precious metal and gem-setting craftsmanship that few chronographs can match. Contact Bizak & Co. to purchase this stunning piece or explore financing options — our team is ready to assist you in acquiring this extraordinary Omega at the best price.

Compare it across every Speedmaster Moonwatch Professional Chronograph reference we carry, or browse the full Omega collection at Bizak & Co.

Buy this Speedmaster Moonwatch Professional Chronograph, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

Not the exact one you’re looking for?

Source your dream watch

Learn More

The Omega Speedmaster Moonwatch Professional Chronograph is one of the most storied timepieces in horological history, having accompanied NASA astronauts to the Moon during the Apollo missions and earning the nickname 'Moonwatch' as a permanent part of its official designation. Over decades of continuous production, Omega has expanded the Speedmaster family beyond its original stainless-steel tool-watch roots into expressions crafted from precious metals and set with gemstones, demonstrating that the Moonwatch's architecture is versatile enough to carry genuine luxury without sacrificing its iconic identity. Reference 310.55.42.50.13.001 represents the pinnacle of this philosophy.

The 42mm case is fashioned from Sedna Gold, Omega's proprietary 18-karat rose-gold alloy developed to resist fading and maintain its warm, distinctly reddish hue far longer than conventional rose gold. The alloy's unique composition gives the case and bracelet a rich, burnished warmth that photographs cannot fully capture — it must be seen and worn to be fully appreciated. The symmetrical Speedmaster case shape, with its signature stepped lugs and asymmetric crown guards, translates beautifully into this precious metal.

The brown dial provides a sumptuous backdrop that harmonizes naturally with the Sedna Gold surroundings. Diamond-set indexes replace the standard applied markers, adding brilliance and a jeweled dimension to the dial without overwhelming the chronograph's legibility. The diamond-set bezel frames the dial with continuous sparkle, reinforcing the precious character of the reference and signaling its position at the very top of the Speedmaster range.

Powering the watch is a manual-winding chronograph movement, a direct nod to the original Moonwatch ethos and to the calibers that earned NASA certification in the 1960s. Manual winding keeps the wearer intimately connected to the timepiece, requiring daily attention and rewarding that ritual with a deeper sense of ownership. The movement architecture behind the Speedmaster's manual-wind chronographs is celebrated by collectors worldwide for its column-wheel construction and horizontal clutch mechanism.

On the wrist, reference 310.55.42.50.13.001 commands attention in a way that no steel Speedmaster can. The 42mm diameter sits with authority without being oversized, and the Sedna Gold bracelet drapes with a suppleness that only a well-engineered precious-metal bracelet achieves. This is a watch equally at home at a black-tie dinner or a private aviation lounge — a true collector's Moonwatch for the buyer who demands both heritage and luxury.

Whether you are adding to an existing Omega collection or acquiring your first precious-metal Moonwatch, our specialists are available to guide you through every detail of the purchase. Reach out today to confirm availability, discuss pricing, or arrange a secure shipment — because a watch this significant deserves a buying experience to match.
Technical Details
Reference
310.55.42.50.13.001
Model
Speedmaster Moonwatch Professional Chronograph
Movement
Manual
Case material
Rose Gold
Bracelet material
Rose Gold
Dial
Brown with diamond-set indexes
Case size
42mm
Requested accessories
Full Set
FAQ

1. What makes the Omega Speedmaster 310.55.42.50.13.001 special?
Reference 310.55.42.50.13.001 is one of the most luxurious versions of the iconic Moonwatch ever produced, combining a 42mm Sedna Gold case and bracelet with a diamond-set bezel and brown dial. It bridges the Speedmaster's legendary space-heritage legacy with precious-metal and gem-setting craftsmanship that places it firmly in haute-horlogerie territory. Very few chronographs in the world carry this combination of historical significance and fine-jewelry execution.

2. What movement powers the Omega Speedmaster Moonwatch 310.55.42.50.13.001?
This reference is powered by a manual-winding chronograph movement, consistent with the Moonwatch's long-standing tradition of hand-wound calibers dating back to the original NASA-certified Speedmasters of the 1960s. Manual winding keeps the wearer actively engaged with the watch and is considered by purists to be the most faithful way to experience the Moonwatch. Omega's manual-wind chronograph movements are internationally recognized for their precision and reliability.

3. What is the case size of this Omega Speedmaster Moonwatch?
The case measures 42mm in diameter, which is the standard and most historically authentic size for the Speedmaster Moonwatch Professional. This diameter offers excellent wrist presence and legibility while remaining proportionate across a wide range of wrist sizes. The case is crafted entirely in Omega's proprietary Sedna Gold alloy.

4. Is the Omega Speedmaster 310.55.42.50.13.001 suitable for everyday wear?
While technically capable of daily wear, this reference is most naturally suited to special occasions, formal settings, and discerning collectors who appreciate wearing a precious-metal, diamond-set chronograph. The Sedna Gold case and bracelet, combined with the diamond bezel, position this watch as a statement luxury piece rather than a casual daily driver. Owners typically reserve it for moments that match its extraordinary character.

5. What is the dial and bezel like on reference 310.55.42.50.13.001?
The dial is brown, providing a warm and richly toned canvas that complements the Sedna Gold case beautifully. Diamond-set indexes replace standard applied markers, adding measured brilliance without compromising readability. The bezel is also diamond-set, encircling the dial with continuous gemstone sparkle and reinforcing the overall precious aesthetic of the watch.

6. Is this a good buy, and how can I purchase it from Bizak & Co.?
Yes — reference 310.55.42.50.13.001 is a full-set Omega Speedmaster in Sedna Gold with diamonds, a combination that holds strong desirability among collectors and represents exceptional craftsmanship at its price point. Bizak & Co. offers this watch at the best price with full box and papers, ensuring complete manufacturer warranty coverage. Contact us directly through bizakandco.com to confirm current availability, discuss payment or financing options, and arrange secure delivery.

Certified Authenticity

Every watch is authenticated before delivery.

Real Family Business

You're buying from genuine people, 30 years in business.

Bizak & Co. Warranty

Every watch is checked by us before shipping.

5 Years Warranty

Our five-year Bizak & Co. warranty covers manufacturing defects affecting mechanical operation under normal use, starting on delivery. It is separate from any remaining manufacturer warranty.

Exclusions include accidental damage, misuse, water damage, cosmetic damage, normal wear, loss and theft. Coverage and service availability for vintage or modified watches are confirmed in writing before purchase.

Read the full warranty terms and service instructions. 

90-Day Returns for Store Credit

Eligible watches may be returned within 90 days for store credit. Brand-new watches and other exclusions are final sale.

Read eligibility, condition requirements, and exclusions.

Insured delivery

Insured shipping

U.S. overnight shipping is $100; international shipping is $500. Dispatch takes 2–3 business days after your wire clears. International transit times vary. Shipping details.

You might also like...

Customer Reviews

Read our reviews on Trustpilot

  • Great family business

    Great family business. They went out of their way to make my purchase go smoothly, they definitely earned my watch business!

    Paul

    Read on Trustpilot ↗

  • Good seller

    Good seller. Honest family

    Mateusz

    Read on Trustpilot ↗

  • Honest family company

    Honest family company. I’ve done business many times!

    Mollie

    Read on Trustpilot ↗

  • Trusted Seller

    Trusted Seller, Definitely recommend for all watches purchase!

    Consumer

    Read on Trustpilot ↗

  • Trusted and honest seller

    Trusted and honest seller. Deal with confidence.

    Jean Dib

    Read on Trustpilot ↗