The best fake Omega Speedmaster Gray Side of the Moon for most buyers is the grey ceramic build that copies the caliber 9300 dial: two counters, a 60-minute totalizer at 3 and running seconds at 9, with the date at 6. That dial architecture is the hardest detail for a replica to hide, so it leads the criteria. The remaining checks are ceramic tone and texture, case proportions, movement behaviour, and strap hardware.
Criteria That Decide the Build
Four checks separate a convincing grey ceramic Speedmaster from a dressed-up steel chronograph:
- Case: sandblasted grey ceramic that holds the same tone in daylight and under indoor light
- Dial: two counters, date at 6, applied indices, no printed shortcuts
- Movement: automatic chronograph with running small seconds at 9
- Proportions: about 44.25 mm across with the thick ceramic profile of the reference
Ceramic Case and Finish
The reference pairs a grey ceramic case with a ceramic bezel and a tachymeter scale. Replica builds split into two camps: a ceramic body, and a coated steel or alloy body with a ceramic-look finish.
- Pro: A ceramic body keeps the matte grey tone and resists scratches from daily contact.
- Pro: Correct lug shape and crown guard profile read as a Speedmaster at arm's length.
- Pro: A filled tachymeter scale on a ceramic bezel avoids the flat sticker look.
- Con: Coated cases chip at the lug edges and show a different sheen in sunlight.
- Con: The grey shifts warm under indoor light on budget builds.
- Con: Ceramic is brittle, and a hard knock can crack what steel would survive.
Use case: for desk work, travel, and daily rotation, choose the ceramic body. If you treat a watch roughly and want simple replacement, a coated case trades tone for durability.
Dial, Subdials, and Date Window
The 9300 layout is the identity of this watch. A 60-minute totalizer sits at 3, running seconds sit at 9, and the date sits at 6. Many replica chronographs use a different base caliber and place parts wherever the movement allows.
- Pro: A two-counter dial with the date at 6 matches the reference architecture.
- Pro: Applied indices and a textured dial catch light the way the original does.
- Pro: Lume that sits inside the index frames reads correct at night.
- Con: Subdials spread too wide apart signal a 7750-derived build.
- Con: A date at 3 is the fastest tell on a grey ceramic Speedmaster.
- Con: Printed lume and flat hands look dull in low light.
Use case: if the watch will be seen by people who know Speedmasters, pay for the correct dial architecture. If it stays under a cuff, dial layout matters less than case tone.
Movement and Pusher Feel
Nothing on the outside reveals a movement faster than the pushers. The reference runs an automatic chronograph with a smooth sweep and a firm reset.
- Pro: An automatic chronograph with running seconds at 9 keeps the dial honest.
- Pro: Solid pusher travel on start, stop, and reset feels deliberate.
- Con: 7750-derived movements can reset with a soft or spongy feel.
- Con: A loud rotor and a jumping subdial hand show up in a quiet room.
Use case: pusher feel matters most if you use the chronograph. If it is a display piece, spend the budget on the case and dial instead.
Size, Weight, and Strap
The reference case measures about 44.25 mm across and sits tall on the wrist. A close replica should feel substantial, not hollow.
- Pro: Correct diameter and thickness give the watch the right presence under a shirt cuff.
- Pro: A grey leather or rubber strap with matching hardware finishes the look.
- Con: Alloy cases feel light and give away the build in the hand.
- Con: Stiff straps and plated hardware wear faster than the case.
Use case: large wrists suit the 44.25 mm case. Smaller wrists should try it on before buying, because the thickness is the part people misjudge.
Which Build Fits Your Use Case
- Daily office wear: ceramic body, 9300-style dial, grey strap.
- Travel and rough use: coated case with a spare strap, since replacement is simpler.
- Photography and collection display: dial texture, date at 6, and bezel fill matter more than the movement.
- First replica purchase: a mid-tier build with a common movement base keeps servicing practical.
Quick Check Before You Pay
- Date window at 6, never at 3.
- Totalizer at 3, running seconds at 9.
- Bezel scale filled, not printed flat.
- Tachymeter numbers aligned with the indices.
- Case back engraving depth and font.
- Pusher travel and reset feel.
- Strap hardware colour matching the case.
A grey ceramic Speedmaster lives or dies on two things: the date position and the ceramic tone. Get those right and most other details fade into the background.