The Short Answer
A fake IW328071 v5 is a counterfeit of the IWC Ingenieur Automatic 40, sold with a version number that means nothing outside the workshop that printed it. Version labels track one factory's own revisions, so a v5 from one seller can be a worse watch than a v3 from another. Ignore the badge and audit the object: case diameter, thickness, dial texture, bracelet integration, movement behavior, and the seller's willingness to show dated photos of the exact piece you would receive. If you want this design without the legal and service headaches, a genuine pre-owned Ingenieur or an integrated-bracelet watch from a mainstream brand is the safer route.
Fake IW328071 V10: What You Need to Know
How Version Labels Actually Work
Factories that produce counterfeit watches release batches. Each time a batch changes, whether that means a new case supplier, a reworked dial, or a different movement, sellers bump the number. There is no registry, no shared standard, and no naming convention across sellers. A v5 that appeared two years ago may still be the newest item a small operation stocks, while a larger one has moved on under a different label. Some listings reuse v5 because it sells.
Ask one question: what changed between v4 and v5? A specific answer, such as a thinner mid-case, a corrected date font, or an upgraded clasp, is a useful signal. A vague answer means the number is decoration.
What to Inspect on the Watch
Case and thickness
The Ingenieur Automatic 40 uses a 40 mm steel case with a slim profile. Counterfeits tend to get the diameter close because it is easy to copy, and miss the thickness because the movement inside is not the same one. Put calipers on the case at the 3 and 9 positions, then measure from caseback to crystal. A figure that runs a millimeter or more over the published spec is visible on the wrist.
Dial and hands
Look at the texture and the applied markers. On the genuine piece the pattern is cut deep enough to catch light at an angle, and the markers sit flat with even lume fill. On a copy, the pattern often reads as a printed grid with shallow relief, and marker edges can show burrs or uneven polishing. Check that the date sits centered in its window and that the font weight matches the rest of the dial printing.
Bracelet
Integrated bracelets are where copies fall apart. The end links should meet the case with no gap and no step. Run a fingernail along the joint. Check link count, taper toward the clasp, and how the clasp closes. A flimsy folding clasp with visible play is common on lower batches.
Movement
The genuine watch runs an in-house calibre with a multi-day power reserve. Most counterfeits run a generic automatic or a decorated clone. Wind it, set it, and watch how it behaves over a full day. If it loses its reserve overnight, the movement is not what the listing claimed. Ask for a photo of the movement through the caseback before you commit.
Numbers Worth Comparing
- Case diameter: 40 mm, measured across the case without the crown.
- Thickness: slim, near 11 mm on the genuine piece. Copies often land between 11.5 and 13 mm.
- Water resistance: rated to 100 m on the original. Treat any replica claim as unverified and keep the watch away from water.
- Bracelet weight: steel integrated bracelets feel dense. A light, hollow-feeling bracelet signals cheap links.
- Power reserve: measured in days, not hours, on the in-house movement.
Pitfalls to Avoid
- Stock photos. If the seller will not send images of the actual unit with a dated note, walk away.
- Version inflation. A new number on an unchanged watch is a marketing move, not an upgrade.
- Water claims. Nobody pressure-tests a counterfeit, and there is no warranty to fall back on.
- Resale promises. Counterfeits do not hold value and are hard to move without breaking the law.
- Service gaps. Many independent watchmakers refuse counterfeit work, and parts for clone movements can be unavailable.
Legal and Practical Risk
Counterfeit watches infringe trademarks. In the United States, importing them is prohibited, goods can be seized and destroyed, and trafficking in counterfeits carries civil and criminal exposure. Selling a counterfeit as a genuine watch is fraud. Setting the law aside, there is no warranty, no parts channel, and no recourse if the watch arrives damaged. Budget for the possibility of losing the money entirely, and confirm the seller's return policy in writing before you pay.
FAQ
Is a v5 better than a v4?
Not on its own. Compare the two batches directly, or ask what changed. The number only means something relative to the same factory's earlier output.
Will people notice it is a fake?
At arm's length, often not. Under close inspection, thickness, dial texture, bracelet gaps, and finishing give it away. Anyone who handles the watch and knows the reference will spot the differences.
Can a replica be serviced?
Some watchmakers work on common clone movements. Many will not touch counterfeit watches, and sourcing parts can be difficult. Plan on treating the watch as disposable.
Is buying one legal?
Purchasing and importing counterfeit goods carries legal risk in the US and many other countries. It is not a neutral transaction, and the risk sits with the buyer as well as the seller.
What is a legal alternative?
A genuine pre-owned Ingenieur keeps its value and can be serviced. If the integrated-bracelet look is what you want, wallets and wrists are well served by the Tissot PRX, the Christopher Ward Twelve, and the Maurice Lacroix Aikon.