The replica Constellation 131.23 is a copy of the 39mm stainless steel Omega Constellation on a leather strap. The best 1:1 versions match the case size, the four bezel claws, the 6 o'clock date, and the dial texture of the original. Cheap copies fail on the dial finish, the crown shape, and the movement inside.

What Is the Omega Constellation 131.23?

Omega uses the 131.23 prefix for stainless steel Constellation models that come on a leather strap. Most references in this group carry a 39mm case, a domed sapphire crystal, and a Co-Axial Master Chronometer movement. The code that follows the prefix tells you the dial color and the strap material.

The Constellation look comes from the four claws on the bezel, set at 3, 6, 9, and 12. A thin, flat bezel sits between them, and the dial uses applied indexes with a framed date at 6 o'clock.

Why Pick the 131.23 Instead of the Bracelet Model?

The leather strap version carries the same case and dial as the steel bracelet Constellation, so most visible detail stays the same. The swap to leather changes the feel and the price, in the original and in the replica.

• Dress watch look that fits under a cuff
• No bracelet links to copy, which keeps replica prices lower
• Strap changes let you alter the look without tools
• Fewer scratches on the wrist than a polished bracelet

What Should You Check Before Buying?

Case, Bezel, and Claws

Start with the claws. On a good replica they sit flush against the bezel edge, with brushed tops and polished sides. Stamped claws with soft edges and uneven gaps are the clearest sign of a budget build.

The case should measure about 39mm across and 12mm thick, with lugs that meet the strap with no gap at the spring bars. A crown that sits proud of the case or feels loose when you wind it points to a low grade case set.

Dial, Hands, and Date

The dial carries applied indexes with polished sides and flat tops. Look for glue marks around the index feet and any misalignment between the marker and the printed minute track.

The date window sits at 6 o'clock in a small frame. The font should be thin, with no smudge, and the disc should snap over in one move instead of drifting.

Strap and Buckle

The original ships on an alligator pattern leather strap with a steel pin buckle. Replica straps range from plastic coated card to real calf leather with a soft backing. Ask for the strap material in writing, and check that the buckle has a brushed finish and no sharp edges.

Case Back and Movement

Ask what powers the watch before you pay. A seller who cannot name the movement is a seller who has not opened the case back.

Which Movement Comes in a 1:1 Replica?

Three movement types show up in Constellation 131.23 replicas, and they set the price more than any other part.

• Japanese automatic (Miyota class): thin, reliable, smooth sweep, plain finish
• Clone Co-Axial automatic: decorated rotor and bridges, closer to the look of the original under a sapphire back
• Quartz: the cheapest option, and the ticking seconds hand gives it away

A decorated clone movement adds cost but also adds a part that can fail. A plain Japanese automatic trades some visual accuracy for a movement any watchmaker can service.

How Much Should a Replica Constellation 131.23 Cost?

Prices move with the seller, the movement, and the strap, but the market splits into three rough bands.

• Under $100: quartz, plated case, hollow feel, wrong date position
• $150 to $300: Japanese automatic, solid steel case, decent dial and hands
• $300 to $500: clone movement, sapphire crystal, matched leather strap and buckle

A quote far below these bands means something was cut. A quote far above them means you are paying for a name, not a better watch.

How Does the 39mm Case Wear?

A 39mm case with a thin bezel reads larger than the number suggests, since the dial takes up most of the width. On a wrist under 6.5 inches the watch covers the top of the wrist with little room to spare.

The leather strap makes the fit softer than a bracelet, and the thin case slides under a shirt cuff. Buyers who want a smaller footprint should look at the 36mm Constellation instead.

Which Flaws Show Up Most Often?

• Claws that sit above the bezel instead of flush with it
• Date window printed off center or placed at 3 o'clock
• Dial that reads gray instead of black or blue in daylight
• Strap with a plastic coating that cracks after a month
• Buckle with sharp edges and a loose tang

How Do You Care for a Replica Constellation 131.23?

Wipe the case and crystal with a soft cloth, and keep leather straps away from water. Water resistance on replicas comes from gaskets that often sit below the original rating, so treat the watch as splash proof at best.

Have the movement serviced every three to five years if you wear it daily. A local watchmaker can handle a Japanese automatic without parts from Omega.

Questions Buyers Ask

Is the replica Constellation 131.23 the same size as the original?

A 1:1 build uses the same 39mm case and 12mm thickness. Cheaper copies can run a millimeter or two larger, which changes how the watch sits on the wrist.

Does the replica use a sapphire crystal?

Mid and high grade replicas do. Budget models use mineral glass, which scratches within weeks and shows a different curve at the edge.

Can a jeweler service a replica?

Yes, if it holds a Japanese automatic. Clone movements can be harder to source parts for, and some watchmakers will turn down the work.

Is buying a replica legal?

Rules differ by country, and customs can seize shipments. Check your local import laws before you order.

The Short Version

A replica Constellation 131.23 is worth buying when the claws sit flush, the dial holds its color, and the movement has a name. Spend in the middle of the market and skip the cheapest listings. The leather strap version hides fewer flaws than the bracelet model, which makes it a safer first pick.