Answer first: buy the case and the movement, not the badge

If you are set on a replica Speedmaster 311, the two elements that decide whether you get a wearable watch or a paperweight are the case proportions and the movement. The reference family you are copying, the Omega Speedmaster Professional Moonwatch in the 311.30.42.30 line, is a 42 mm hand-wound chronograph with a hesalite crystal, three subdials, no date, and a tachymeter bezel. Any copy that misses the 42 mm diameter, the 20 mm lug width, or the roughly 47 mm lug-to-lug span will sit wrong on the wrist however sharp the printing looks. Because the original is hand-wound, a replica built around an automatic chronograph with a rotor is a size and feel mismatch. Ask what movement is inside, ask for a caseback photo, and ask for a wrist shot before you commit. A candid seller answers all three. Before you spend, weigh the practical downside: these are unauthorized copies, they carry no warranty, and counterfeit trademarked goods can be seized at import in the United States. That is the honest starting point.

What to look for

Case and crystal

  • Diameter near 42 mm, thickness roughly 13 to 14.5 mm, lug width 20 mm, lug-to-lug about 47 mm. These numbers drive the fit more than anything on the dial.
  • Hesalite acrylic crystal on the standard 311 Moonwatch. Sapphire is not wrong in the Speedmaster family, but it belongs to a different reference, so a listing claiming both exact 311 spec and sapphire is contradicting itself.
  • Straight, crisp case flanks with an unbroken brushed finish. Copies often show soft edges and uneven polishing on the lugs.
  • The asymmetric case shape with twisted lugs. A generic round case is the biggest give-away.

Movement

  • Hand-wound chronograph, no date. If the movement has a rotor or a date wheel, it does not match the reference.
  • The genuine calibres run about 48 hours of power reserve on the older 1861 and about 50 hours on the current 3861.
  • Common replica options are Chinese hand-wound chronograph movements and modified automatic chronographs. Ask which one, and expect seconds behaviour that differs from the original.

Dial and bezel

  • Three subdials: running seconds at 9 o'clock, 30-minute counter at 3, and 12-hour counter at 6. Registers in the wrong spots are the most common dial fault.
  • No date window. Any aperture at 3 or 4:30 means the dial and movement do not match the watch you are copying.
  • TACHYMETRE spelling and numeral weight on the bezel. Faint, thin or misaligned printing shows up close.
  • Matched lume on hands and markers, an applied logo with clean edges, and subdial hands that reach their track.

Bracelet and finishing

  • End links that sit flush against the case with no gaps or wobble.
  • Consistent brushing on outer links and polished centre links. Mixed grit levels across the bracelet are a giveaway.
  • Signed clasp and crown, with a crown that engages without grit and pushers that return with a firm click.

Parameter bands to check

  • Case diameter: 41.5 to 42.5 mm
  • Lug width: 20 mm
  • Lug-to-lug: 46 to 48 mm
  • Thickness: 13 to 14.5 mm
  • Crystal: hesalite on the standard 311 configuration
  • Subdials: three, at 3, 6, and 9
  • Date: none
  • Water resistance: the original is rated to 50 m, so treat any higher replica claim as marketing until a pressure test proves it
  • Power reserve: roughly 45 to 50 hours

Pitfalls that cost the most

  • Paying for a Swiss made claim on a watch that is not Swiss made. That phrase is a legal marking, not a grade you can take on faith in a listing.
  • Trusting stock photos. Ask for timestamped, natural-light images of the actual piece, including the caseback and the movement if the back is open.
  • Ignoring service. A hand-wound chronograph has more parts than a three-hand watch, and replica movements have no parts network behind them. When one fails, the usual fix is a whole-movement swap.
  • Assuming water resistance. Gaskets and case finishing on copies are inconsistent. Do not swim or shower in one.
  • Buying to resell. These pieces do not hold value, and passing one off as genuine is fraud.

Legal and practical reality

Unauthorized copies of a protected design and name infringe trademark rights. In the United States, Customs can detain and seize counterfeit goods at the border, and the importer can face civil penalties. That risk sits with the buyer, not only the seller. There is also no meaningful after-sales support: no warranty, no authorized service, and no parts compatibility with genuine components. If what you want is the Moonwatch look on a hand-wound chronograph, a serviced pre-owned genuine example or a distinct homage watch from a brand that does not copy the logo gives you something repairable and no legal exposure. Compare total cost of ownership, not just the price at checkout.

FAQ

How do I tell if a replica Speedmaster 311 is well made?

Start with proportions: 42 mm across, 20 mm lugs, about 47 mm lug-to-lug, 13 to 14.5 mm thick. Then check the dial layout: three subdials at 3, 6, and 9, and no date. A hand-wound movement with a smooth chronograph start and a crisp pusher reset matters more than any engraving.

Should a replica Speedmaster have a hesalite or sapphire crystal?

The standard 311 Moonwatch uses hesalite. Sapphire appears on other Speedmaster references, so a seller claiming an exact 311 copy with sapphire is describing a mix of two watches.

Can a replica Speedmaster be serviced?

Seldom by an authorized watchmaker. Genuine parts are not sold for these copies, so repairs mean replacing the whole movement. Budget for that, or choose a watch with a supported movement.

Is a replica Speedmaster 311 a good investment?

No. Copies lose value, cannot be authenticated, and cannot be resold as genuine. Genuine Speedmaster references hold value far better, and a serviced pre-owned Moonwatch is the stronger long-term buy.