Short answer
Fake IW327012 watches copy the IWC Pilot's Watch Mark XVIII Le Petit Prince. The genuine reference has a 40 mm stainless steel case, a blue dial, and IWC caliber 35111. Replicas sell for $80 to $400. Used genuine examples list in the low to mid four figures in US dollars. Movement, dial print, date font, and caseback engraving separate the two.
What the reference is
IW327012 is the IWC Pilot's Watch Mark XVIII Le Petit Prince. IWC built the Mark XVIII line from 2016 to 2022. The Mark XX replaced it. IWC no longer sells the reference new.
Case: stainless steel, 40 mm diameter, 11 mm thick, 20 mm lug width. Water resistance is 6 bar. The crystal is sapphire with an anti-reflective coating on both faces. A soft-iron inner case shields the movement. The dial is blue with white print. The date window sits at 3 o'clock.
Movement: caliber 35111. Automatic, 25 jewels, 28,800 vibrations per hour, 42 hours of power reserve. The base is a Sellita SW300-1. The rotor carries an IWC engraving. The caseback is solid steel. Le Petit Prince editions carry an engraved figure of the Little Prince.
Points to check on a replica
- Dial print. Genuine IWC and Schaffhausen text is thin and sharp. Replica print is heavier and can sit off-center.
- Date font. The genuine date wheel uses a plain sans-serif numeral. Fakes use the wrong weight or an italic cut.
- Crystal coating. Genuine sapphire shows a blue-purple tint from the double coating. Many fakes coat one face or none, so the glass glares under light.
- Movement rate. Caliber 35111 runs at 4 Hz, which gives 8 ticks per second. A replica with a 21,600 vph movement gives 6 ticks per second and a slower sweep.
- Caseback. Genuine engraving is cut into the steel and has depth. Fake engraving is shallow and laser-etched.
- Bracelet. Genuine links fit with tight tolerances. Fakes show gaps, sharp edges, and faint clasp engraving.
- Weight. Fakes use thinner steel, so the watch feels light on the wrist.
Price gap
Replica sellers list the IW327012 for $80 to $400. That price buys a copy of a watch that sold new for several thousand dollars. Ask what movement sits inside. Sellers who name a 3 Hz movement are selling a lower grade build.
Paperwork and service
Genuine watches ship with a warranty card and a serial number stamped on the caseback. IWC service centers will not service a counterfeit. Ask for the serial number and the papers. Buy from a seller who accepts returns. The author has not tested every replica on the market, so weight and finish vary by factory.