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    Bob's Watches
    100% Certified Authentic

    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

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100% Certified Authentic

Bob's Watches
100% Certified Authentic

At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

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Omega Speedmaster Moonwatch 'Grey Side of the Moon'

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Omega Speedmaster Moonwatch 'Grey Side of the Moon'

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    100% CERTIFIED AUTHENTIC

    Bob's Watches
    100% Certified Authentic

    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

    Guaranteed Authentic
    Certified Authentic WatchesCertified 100% Authentic
    Bob's Watches Genuine Authenticity Pledge
    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.
Looking to sell? Sell Your Omega

Brand: Omega
Item Number: 124645
Condition: (What's This?) Excellent
Model Name/Number: Speedmaster Moonwatch "Grey Side of the Moon" - 311.63.44.51.99.001
Serial/Year: 87,XXX,XXX
Gender: Men's
Movement: Automatic Omega calibre 9300 movement w/ date, 54 jewels, co-axial escapement, chronograph, tachymeter, transparent caseback, water resistant to 50m (167ft), anti-reflective scratch-resistant sapphire crystal, 60-hour power reserve
Case: Grey ceramic (44.25mm) w/ tachymetric bezel
Dial: Grey meteorite w/ luminous hands and index hour markers w/ 2 sub-dials; red-tipped second hand
Bracelet: Grey alligator strap w/ titanium foldover clasp 
Box & Papers: Omega box, booklet, wallet, pouch, Pictogram cards, and Omega warranty card dated 1/2018
Comments: This used Omega Speedmaster comes w/ Bob's 3-day satisfaction guarantee and one year warranty

Used Omega Speedmaster Moonwatch "Grey side of the Moon" - 311.63.44.51.99.001

By Paul Altieri

The Omega Grey Side of the Moon ref. 311.63.44.51.99.001 is a variation of the brand's iconic Moonwatch that boasts an innovative grey case that is crafted from white ceramic material. The feathery grey hue is designed to mimic the moon dust in which humankind's first steps are forever immortalized and celebrates our quest to expand our reach further into the universe. If you've had your heart set on adding this spectacular Speedmaster to your collection, the pre-owned Omega that is presented here today is an excellent option to consider. Omega cleverly pairs the grey ceramic case with a bold grey meteorite dial, further honoring the Speedmaster's role in space exploration. A grey leather alligator strap and titanium tang clasp complement the tones of the case and dial perfectly for a thoughtful design that you will be proud to wear on your wrist. When it comes to memorable chronographs, the Grey Side of the Moon is hard to beat.

htThe Omega Speedmaster professional chronograph, or Moonwatch, is the master of precision timekeeping. Trusted by Nasa as a tool watch for Astronauts, the Omega Speedmaster has famously accompanied astronauts on six lunar missions. Its impressive chronograph function includes a seconds subdial, 30-minute subdial, 12-hour subdial, and central sweeping hand. Pushing the side pushers engages the chronograph function, allowing the wearer to use their Omega Speedmaster as a stopwatch. The case is also outfitted with a Tachymetric bezel that can be used to measure incredible speeds, a particularly useful function for astronauts and professional drivers. The case is waterproof up to 50 meters and outfitted with a Hesalite crystal. The Omega calibre 1861 movement beats within the case and boasts manual-winding and a 48-hour power reserve.tps://www.youtube.com/watch?v=BY9h4wqKbbk
Certified Authentic Watch Assist Certified Pre-Owned Certificate Sample ReportClick To Expand
Certified Authentic Report
Watch Assist Certified Pre-Owned Certificate Sample Report

*All Pre-Owned Omega watches are guaranteed to be 100% genuine and certified authentic. All watches are shipped to fit the average size wrist (7 1/4" - 7 1/2" for men and 6 1/4" - 6 1/2" for women). Additional links can be purchased if needed.

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  • 5/5

    Regarding BOB’s WATCHES / *** When purchasing an item that is as expensive as a high quality pre owned ROLEX, you’d only hope for a great experience and great service....  when dealing with BOB’s WATCHES and specifically with *** in the Service/Sales Department, you will receive not only a GREAT EXPERIENCE and GREAT SERVICE, but a truly professional and yet personal connection in which you will treated with the high quality luxury sales & service you’d expect. After my 3rd ROLEX purchase from BOB’s WATCHES, I can truly say I am VERY thankful that I made all of my purchases with ***!!!!    Thank you, ***

    September 14, 2020
  • 5/5

    I have made several purchases and one sales through Bob’s. The order process, payment, processing, and most importantly delivery have all been absolutely flawless. Very quick and efficient. I never look anywhere else for used Rolex.

    November 30, 2019
  • 5/5

    Fantastic experience

    October 22, 2019
  • 5/5

    Watch was exactly as advertised and in excellent condition. Thank you for providing top notch services!

    September 29, 2019
  • 5/5

    Superb site and transaction, phenominal delivery time. Some slight confusion concerning the special discount at the time. I didn't receive it. No big deal I would not hesitate to purchase another rolex from Bob's ! ***

    September 28, 2019

"The most trusted place to buy or sell a used luxury timepiece" – WSJ

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Bob's Watches is an independent watch dealer and is not sponsored by, associated with and/or affiliated with Rolex, or any other brand listed. Bob's Watches only sells pre-owned watches and provides its own warranties on the watches it sells. Rolex Datejust, Rolex Day Date President, Submariner, Presidential, Explorer, Sea Dweller, Super President, GMT Master, GMT, YachtMaster, Prince, Milgauss, MasterPiece, Air King, Cosmograph Daytona, and PearlMaster, etc are all registered trademarks of the Rolex Corporation. All brands including Brequet, Cartier, Audemars Piguet, Patek Philippe, Ulysse Nardin, Breitling and Omega, etc are trademarks of their respective owners.