Omega · Speedmaster · Grey Side of the Moon · meteorite dial · Sedna gold bezel · on Amazon
The Speedmaster with a meteorite for a dial. One left.
This is the Speedmaster whose dial fell from the sky: the Grey Side of the Moon Meteorite, reference 311.63.44.51.99.001, a 44.25mm case in grey ceramic with an 18k Sedna gold tachymeter bezel, a dial sliced from the Gibeon iron meteorite and acid-etched so its Widmanstatten crystal pattern shows, two counters, the date at six, on a grey leather strap. Inside is Omega’s co-axial calibre 9300, an automatic column-wheel chronograph with a 60-hour reserve and a COSC certificate; 50 metres, about 104 grams. One left, from a marketplace seller on Amazon.

Case
44.25mm, 16.14mm thick, 21mm lugs, 49.80mm lug to lug, grey ceramic with an 18k Sedna gold tachymeter bezel, sapphire caseback, 50m, about 104 g
Omega 311.63.44.51.99.001; listing: 44.25mm
Movement
Omega co-axial calibre 9300, automatic column-wheel chronograph, COSC, 60 h
Omega; listing: automatic
Dial
Grey Gibeon meteorite, acid-etched Widmanstatten pattern, Sedna gold applied markers and hands, two counters, date at 6
Listing title: meteorite; photograph; Omega
Strap
Grey leather, foldover clasp
Photograph; Omega: strap colour grey
Reference
311.63.44.51.99.001
Listing title and model row
Seller
MS-TR JAPAN, marketplace seller; in stock; 30-day returns; only 1 left; condition not stated
Amazon buy box, 2026-09-14
Meteorite, ceramic, Sedna gold
Omega’s ceramic Speedmasters take the Moonwatch shape, enlarge it to 44.25mm and make the whole case, bezel, pushers and crown from one colour of zirconium oxide ceramic, so nothing scratches and the watch weighs about 100 grams on a strap. Inside is a co-axial automatic chronograph rather than the hand-wound Moonwatch calibre, with the two counters of the 9300 family: hours and minutes together at three, small seconds at nine.
The Grey Side of the Moon Meteorite adds three materials to that formula: a grey ceramic case, a bezel in Omega’s 18k Sedna gold alloy, and a dial cut from a slice of the Gibeon meteorite that fell in Namibia, etched with acid so the nickel-iron crystal structure that formed over millions of years in space shows as a pattern no two dials share. It is the Speedmaster for someone who wants the Moonwatch idea taken literally.

Reading the listing
The listing carries the reference 311.63.44.51.99.001 in the title and model row and calls it a 44.25mm automatic chronograph with a meteorite dial. The photograph shows the grey ceramic case, Sedna gold bezel, meteorite dial and grey strap. The thickness, lug width, lug to lug, weight, calibre, COSC certification, reserve and 50 metres are Omega’s published figures for the reference.
The seller is MS-TR JAPAN, a marketplace seller, and the rows we read do not state whether the watch is new with Omega’s five-year warranty; ask, and ask for the box and card. Nothing here was measured on the watch.

Buying it on Amazon
This is a regular Amazon listing from a marketplace seller with Amazon’s 30-day return window; it is not a Luxury Stores pre-owned unit and the seller has not published a condition. The second button opens the live search for ceramic Speedmasters in case this one has sold.
Speedmasters have resold for under new and close to what pre-owned buyers paid, sometimes more, sometimes less; that is a pattern, not a promise, and nothing here is investment advice.

Specs
- Reference
- 311.63.44.51.99.001
- Case size
- 44.25mm, 16.14mm thick, 21mm lugs, 49.80mm lug to lug, about 104 g
- Case material
- Grey ceramic case with 18k Sedna gold tachymeter bezel; sapphire caseback
- Movement
- Omega co-axial calibre 9300, automatic column-wheel chronograph, COSC chronometer
- Caliber type
- Omega 9300 co-axial, COSC
- Crystal
- Sapphire, anti-reflective both sides
- Water resistance
- 50m (5 bar)
- Power reserve
- 60 hours
- Complications
- Chronograph (60 minutes and 12 hours on one counter at 3, small seconds at 9), date at 6
- Origin
- Swiss Made
Specifications as published by Omega. We research from manufacturer documentation and published sources rather than hands-on testing. Researched 2026-09-14.
Verdict
Omega’s Speedmaster Grey Side of the Moon Meteorite: grey ceramic, a Sedna gold bezel and a Gibeon meteorite dial over the co-axial 9300, one left on Amazon from a marketplace seller.
Strengths
- A genuine meteorite dial; no two alike
- Grey ceramic case with an 18k Sedna gold bezel
- Co-axial 9300, column wheel, 60 hours
- Full reference on the listing; Amazon’s return window
Trade-offs
- Condition and warranty card not stated by the seller; ask
- 44.25mm and 16.14mm; a big watch
- 50 metres; not a swim watch
- MS-TR JAPAN ships from Japan; ask about delivery time
Buy it if
Someone who wants the most unusual Speedmaster dial Omega makes, in ceramic and gold.
Skip it if
You want the hand-wound Moonwatch, a smaller case, or a stated condition.
FAQ
Yes, per Omega: a slice of the Gibeon iron meteorite, acid-etched to reveal the Widmanstatten pattern of its nickel-iron crystals. Each dial’s pattern is different.
Compare
Sources
- Omega Speedmaster Grey Side of the Moon Meteorite 311.63.44.51.99.001, official page
- Amazon marketplace listing (MS-TR JAPAN), read 2026-09-14
Researched and last updated 2026-09-14. We do not test watches in hand; every figure above is traceable to the manufacturer or the sources listed here.
Omega Speedmaster Grey Side of the Moon "Meteorite" 44.25mm 311.63.44.51.99.001 (grey ceramic, Sedna gold bezel, meteorite dial, leather strap)
Reference 311.63.44.51.99.001 · $10,000–$25,000
Prices and availability change; the band above is a research figure, so check the current listing.
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