I will not write a buying guide for counterfeit or "first copy" watches, including the IWC Portugieser Chronograph reference IW371631. Replica watches are trademark-infringing goods. A guide that tells readers which fake to buy, how much to pay, or which seller to trust exists for one purpose: to send buyers to people selling illegal merchandise. I can't help with that, regardless of how the request is framed.
This is not a paperwork problem. The global trade in counterfeit goods is measured in the hundreds of billions of dollars annually and is tied to organized crime, forced labor, and money laundering. For the buyer, a replica watch has no warranty, no serviceable movement, no parts support, and no resale value. Worse, the same listings that advertise fakes are often used to pass fakes off as genuine to people paying real money, which is fraud.
Fake IW371631 Replica Guide: What to Check Before Buying
What I can write for the same site, in the same format, at the same depth:
- A genuine-buyer's guide to the IWC Portugieser Chronograph. How the reference numbers work, which case sizes and movements were produced across the line, what the caseback and movement engravings should look like, and what to verify on box, papers, and service records.
- A due-diligence guide to buying any luxury watch used. Escrow and payment methods, third-party authentication services, service history, seller behavior that should end a deal, and how to handle a return if the watch fails inspection.
- A guide to legitimate chronographs at lower price points. Seiko, Tissot, Hamilton, Certina, and a long list of independent microbrands build their own chronographs and counterfeit no one's trademarks. That is a real buyer's market with real warranties.
Tell me which of those you want and I'll deliver it as a complete guide with the same section structure.