Set the Expectation First
There is no legitimate supply of "replica" IW371653 watches. Every one of them is an unlicensed copy of an IWC design, and in the United States importing, selling, or shipping one violates trademark law. Customs and Border Protection seizes counterfeit watch shipments at the port, and the buyer is the party left holding nothing. Beyond the legal problem, a counterfeit IW371653 has no serviceable movement, no spare parts, no warranty, and no resale value. If the look of the Portugieser Chronograph is what you want, the honest path is the genuine reference on the secondary market, where prices are lower than most people assume.
Prerequisites
- A budget range confirmed against current listings, not against a number you remember from three years ago.
- A working understanding of the reference number, because IW371653 is one variant among many in the Portugieser Chronograph line.
- A payment method with chargeback protection. Wire transfers and crypto are the two fastest ways to lose money on a watch.
- Access to an independent watchmaker for a pre-purchase inspection, or a written return window of at least seven days.
How to Buy the Genuine Watch
- Write down the full reference and confirm its dial, case metal, and strap code against the manufacturer's own catalogue before you shop.
- Decide between an authorized dealer, a reputable grey-market seller, and the pre-owned market. Only the first two give you a factory warranty.
- Request a set of high-resolution photographs that includes the caseback engraving, the movement through the display back, and the clasp stamping.
- Ask for the original box, warranty card, and service paperwork. A watch sold "watch only" should be priced accordingly.
- Verify the serial number with the manufacturer or an authorized service center before money changes hands.
- Agree on an inspection period and a return policy in writing before you pay.
- Pay by credit card or an escrow service so the transaction is reversible if the watch fails inspection.
- Take the watch to an independent watchmaker within the inspection window and have the movement, case, and dial checked.
Parameters to Compare
- Calibre: the current Portugieser Chronograph runs an in-house automatic chronograph movement with roughly a 46-hour power reserve. Ask for the calibre number and the service history.
- Case: stainless steel, roughly 41 mm across and 13 mm thick, with sapphire crystal front and back.
- Water resistance: rated to about 30 metres, which means splash resistance, not swimming.
- Dial and hands: applied indices, feuille hands, and two subdials at 12 and 6. Check for refinishing under a loupe.
- Papers: a stamped warranty card dated within the coverage period adds real money to the resale price.
Pitfalls
- Sellers who advertise a "1:1 replica" and price it near genuine secondary-market levels. You are paying real money for a watch worth nothing.
- Listings that use stock manufacturer photographs instead of pictures of the actual watch.
- Prices far below market. On this reference, a bargain usually means a stolen watch, a franken watch, or a fake.
- Payment by wire, gift card, or cryptocurrency. None of these can be reversed.
- Pressure to close the deal today. Genuine sellers of genuine watches do not need urgency.