Short answer

The IW329070 is an IWC reference number. We could not confirm the model line, case size, and production years for this reference from IWC's public catalog, so treat any seller spec sheet as unverified until it matches photos of the genuine watch. The checks below cover what a buyer can confirm without a catalog entry: movement, case measurements, dial print, and price.

What the reference number tells you

IWC reference numbers use the IW prefix and five digits. The first four digits group the model family. The last three set the variant: dial color, strap, and metal. A seller who lists IW329070 should show the same number stamped on the caseback of the genuine watch the factory copied. If the listing shows a different number, the photos are stock images.

Movements in IWC replica three-hand automatics

  • Miyota 9015, Japan: 24 jewels, 28,800 vph, 42-hour power reserve.
  • Seagull ST2130, China: 28,800 vph, ETA 2824 layout, 38-hour reserve.
  • Sellita SW200, Switzerland: 26 jewels, 38-hour reserve.
  • ETA 2824-2 or a Chinese clone: 25 jewels, 38-hour reserve.

Ask for the movement name in writing. A listing that says "Swiss movement" and nothing else is a Chinese automatic in most cases.

Checks before payment

  1. Case diameter with calipers. Request a photo of the jaws on the case, not a ruler beside it.
  2. Lug width. 20 mm, 21 mm, and 22 mm all appear on IWC pilots cases. A 0.5 mm gap shows at the strap join.
  3. Dial print at 10x. Compare the brand letters, the minute track, and the date window edge against the genuine photo.
  4. Crown threads. Request a video of the crown unscrewed and screwed down.
  5. Timegrapher shot. Rate inside +/-10 s/day and amplitude above 250 degrees at full wind are normal for a regulated clone.
  6. Water resistance. Most replicas do not pass a pressure test. A 100 m claim without a test printout is a guess.

Price bands

Entry tier, Chinese automatic: $80 to $150. Mid tier, Miyota 9015 or Seagull ST2130: $250 to $450. Top tier, Sellita or ETA: $450 to $700. Above $800 for a three-hand IWC replica, ask for a written spec list and QC photos before payment.

What is not known

Factory labels change each year. A name on a listing does not guarantee the same parts as the last batch. Ask for photos of the actual watch, with a serial visible. A seller who cannot name the movement and the case diameter is selling a catalog render.