The short answer: no replica of the IWC Portugieser reference IW329159 earns a "best" label in the sense buyers usually mean. The case and dial can be copied well at 40mm. The in-house movement with its Pellaton winding system cannot, and that gap is what you live with every day rather than what you see in a product photo. This guide compares the four routes buyers actually weigh, high-tier clone, entry-tier copy, pre-owned genuine, and declared homage, against the criteria that decide the outcome: case fidelity, dial and hand finishing, movement and serviceability, legal exposure, and resale.
How to Spot a Fake IWC IW329159: Step-by-Step Buyer Checks
The criteria that decide this reference
- Case fidelity. The Portugieser Automatic 40 has thin lugs and a slim bezel. Copies often add 1 to 2mm of thickness to fit a generic automatic, which changes how the watch sits under a cuff.
- Dial and hands. Applied numerals, leaf hands and the printed railway track are where sub-$500 copies fall apart under a loupe. Crooked markers and flat hands are the usual tells.
- Movement and service. A clone automatic can be regulated, but parts availability and whether an independent watchmaker will touch it are the real dividing line.
- Legal exposure and resale. A counterfeit shipment into the US is a seizure risk, and a replica has no resale channel. Both belong in the true cost.
Route 1: The high-tier clone
The top tier of the replica market for this reference usually means a scanned case, a decorated clone automatic, and a domed sapphire crystal cut to match. Sellers call these the best available, and on the wrist in a photograph they read close. Two things stay wrong: the movement is not the calibre used by IWC, so winding feel, rotor noise and service intervals all differ, and the caseback engraving and lug profile are reverse-engineered from images rather than drawings.
Pros
- Closest visual match of the replica routes, particularly dial color and applied markers.
- Correct case diameter and crystal dome, so it photographs well.
- Usually fitted with a movement that can be regulated by a competent local watchmaker.
Cons
- Highest price of the copy tiers, often close to a used entry-level Swiss watch.
- No warranty that survives the shipping label, and no parts supply once the movement fails.
- Cannot be serviced by the brand, and many watchmakers decline the work.
- Customs seizure risk with no recourse to the seller.
Route 2: Entry and mid-tier copies
Below the top tier, the compromises move from the movement to the outside. Thicker cases, mineral glass instead of sapphire, stamped rather than applied numerals, and a strap that uses corrected-grain leather with a generic buckle. These sell on price and look acceptable at arm's length in a dim room. They do not survive daylight or a handshake.
Pros
- Low cost of entry if you only want to test whether the 40mm Portugieser shape suits your wrist.
- Low financial loss if the watch is seized or dies.
Cons
- Obvious tells at normal conversation distance, including thick lugs and flat dial printing.
- Poor timekeeping and short movement life.
- Same legal position as the expensive tier, with none of the visual payoff.
Route 3: Pre-owned genuine
A used Portugieser Automatic 40 is the route that ends the question. The reference sits in a well-documented line, so service history, box and papers, and movement condition can all be verified before money changes hands. The secondary market for IWC is liquid enough that you can see real completed prices rather than a seller's claim.
Pros
- Real movement, real finishing, and a watchmaker who will service it.
- Holds value and can be sold again.
- No legal risk and no seizure exposure.
Cons
- Costs multiples of any replica route.
- Requires homework on sellers, service records and authenticity.
Route 4: Declared homage
A homage copies the design language and puts the maker's own name on the dial. It is legal, it is honest about what it is, and several microbrands build slim dress watches in the same idiom with reliable Japanese or Swiss movements.
Pros
- Legal to buy, import and resell.
- Comes with a warranty and available parts.
- Scratches the design itch at a fraction of the cost.
Cons
- Not a replica, so nobody will mistake it for the IWC.
- Finishing and dial work sit below the original by a wide margin.
Legal exposure in the US
Counterfeit watches are prohibited merchandise. US Customs can seize an inbound package, and trafficking in counterfeit goods carries civil and criminal exposure under federal law. A watch bought for personal use does not become legal because the buyer intended to keep it. Add the practical side: no warranty, no parts, and a repair shop that may hand it back untouched.
Which route fits which buyer
- Daily wear for years: pre-owned genuine, or keep saving for it.
- Trying the look for a season: a declared homage with the maker's own name on the dial.
- Photographs only: the high-tier clone is what people mean by "best," but budget for the fact it will not keep time like the original and cannot be resold.
- Anything resembling an investment: none of the replica routes qualify.
The phrase "best fake IW329159" is really a question about how much of the original you are willing to give up. The case and dial can be bought back. The movement, the service relationship and the resale value cannot.