Short answer

The IW329002 is an IWC Pilot's Watch Mark XVIII reference. It sits on the Mark XVIII platform: a 40 mm stainless steel case, a caliber 35111 automatic movement, a sapphire crystal, and a soft-iron inner case. Replicas copy the outside. They do not copy the movement. The caseback on this model is solid and engraved, so the movement is the part you have to ask about.

What the reference covers

IWC splits the Mark XVIII line across the IW3270xx and IW3290xx reference blocks. Strap models and bracelet models are mixed through both. The IW329002 falls in the IW3290xx group. Dial color and bracelet finish change between suffixes, and sellers list suffixes wrong on a regular basis. Pull the number against IWC's own product archive before you send money.

Genuine specs to compare against

  • Case: stainless steel, 40 mm diameter, about 11 mm thick, 20 mm lug width
  • Movement: caliber 35111, automatic, 25 jewels, 28,800 vph, 42-hour power reserve
  • Crystal: sapphire, antireflective coating on both faces
  • Water resistance: 60 m
  • Magnetic protection: soft-iron inner case
  • Dial: matte black or blue, white printed numerals and markers, date at 3 o'clock
  • Hands: leaf shape, white luminous fill
  • Caseback: solid, engraved with the reference number

What replica makers get right and wrong

Most replicas of this model ship with a Miyota 9015, a Seiko NH35, or a Chinese copy of an ETA 2892. Miyota and NH35 builds are the two a US watchmaker can service at low cost. Case dimensions land within a few tenths of a millimeter on the better builds. The weak points are dial print, date font, crown threads, and crystal coating.

  • Dial print: the IWC and SCHAFFHAUSEN text runs thick or wide.
  • Date font: the genuine uses a specific numeral shape, replicas use a generic one.
  • Crown: coarse threading on low-end builds, and the crown does not sit flush.
  • Crystal: single-side coating on most replicas, which adds a blue tint.
  • Lume: short charge and short glow under $200.

Checks before you buy

  1. Ask for the movement name and a photo of the open caseback.
  2. Measure the case at the lugs and at the crown guard. 40 mm is the target.
  3. Check date window alignment on the 3, 9, 15, and 21. A misaligned date disc cannot be fixed with a service.
  4. Confirm 20 mm lugs so standard straps fit.
  5. Ask if the case was pressure tested. Most sellers skip this step.
  6. Check that the crown screws down in two turns or fewer.

Prices

Common asking prices run $80 to $150 for quartz and low-grade automatic builds, $200 to $400 for Miyota and NH35 builds, and $450 to $700 for the top tier. A pre-owned genuine Mark XVIII trades in the low thousands, so the gap stays wide at every tier.

What no replica copies

The caliber 35111 is a modified Sellita SW300-1. IWC finishes and regulates the movement and fits it inside a soft-iron cage. Some replicas include a soft-iron ring and some do not. The reference number is stamped on the outside of the caseback, so a replica can carry the correct number and still be a replica. Buy from a seller who states the movement and accepts returns.