Short answer

A replica IW329143 is a copy of an IWC Pilot's Watch Automatic 36. IWC reference numbers in that line include IW329101 and similar. I could not confirm IW329143 in IWC's public catalog at the time of writing, so the exact variant needs confirmation from the seller. Replica prices for this reference run from about $90 to $700. Genuine Pilot's Watch Automatic 36 models sell in the four-figure range. Selling or importing a counterfeit watch is illegal in the United States.

Specs of the source watch

  • Case: stainless steel, 36 mm diameter, about 10.5 mm thick
  • Movement: automatic, 28,800 vph, about 42 hours of power reserve
  • Crystal: sapphire with antireflective coating on both faces
  • Water resistance: 6 bar, which is 60 m
  • Dial: black with white numerals, date window at 3 o'clock
  • Strap: leather or steel bracelet, based on the variant

Check each number against the seller's listing. A 40 mm case sold as a 36 mm model is the first sign of a mislabeled item.

Price tiers

  1. $90 to $180. Quartz or low-grade automatic. Plated case, not solid steel. Dial printing and date font are wrong.
  2. $200 to $350. Automatic movement at 21,600 vph. Solid steel case. Crystal has weak or no antireflective coating.
  3. $400 to $700. Copy of a Sellita-based movement or a decorated Miyota 9015. Closer dial printing, correct hand shape, sapphire with two-sided coating.

Checks before payment

  • Ask for the case diameter in millimeters. 36 mm, not 40 mm.
  • Ask for a macro photo of the dial text. Look at letter spacing and the shape of the IWC wordmark.
  • Ask for the beat rate. 28,800 vph is 8 ticks per second.
  • Ask about the crystal. Two-sided antireflective coating shows a blue tint at an angle.
  • Ask for a caseback photo. Engraving depth and font change between tiers.

Movement facts

IWC caliber 35111 sits in the Pilot's Watch Automatic 36. It uses a Sellita SW300-1 base. Most replicas at this price use a Miyota 9015, a Seagull ST2130, or an unbranded Chinese automatic. Beat rate and power reserve are two values a seller can state in a message. A 21,600 vph movement ticks 6 times per second. A 28,800 vph movement ticks 8 times per second. The second hand on the slower movement looks less smooth to the eye.

Legal position in the US

18 U.S.C. Section 2320 covers trafficking in counterfeit goods. U.S. Customs and Border Protection can seize a shipment of counterfeit watches and sends a seizure notice to the importer. Repeat shipments can lead to civil penalties. A private buyer who orders one watch can still lose the item and the payment. Card networks and payment processors often refuse chargebacks on counterfeit goods.

What stays unknown

I cannot confirm that IWC made a reference named IW329143. Ask the seller for the source model name and a photo of the genuine piece. If the seller cannot name the source watch, treat the offer as unverified.