Short answer
The replica IW323720 is a counterfeit version of the IWC Ingenieur Automatic, a stainless steel sports watch with an integrated bracelet, a soft-iron inner case, and a screw-down crown. The genuine watch runs an in-house IWC automatic caliber. Replicas run third-party movements in generic cases with reprinted dials. Judge a copy on four points: case geometry, bracelet fit, dial print, and movement type. Everything else is seller marketing.
Before you start
- Write down the genuine specs: case diameter, thickness, lug width, bracelet taper, and weight.
- Check the secondary market price for a genuine Ingenieur Automatic so you can spot absurd claims.
- Pick a movement tier and a budget before you message a seller.
- Get returns, tracking, and payment terms confirmed in writing.
- Know the rules where you live. Counterfeit imports can be seized and fined.
Inspection checklist
- Measure the case with calipers. Compare diameter and thickness to the spec you wrote down. A copy that is 1 mm thicker or 1.5 mm wider wears differently and pushes the bracelet away from the wrist.
- Look at the bezel screws. Slots should be cut to the same depth, spaced evenly, and sit flush. Crooked or proud screw heads are the first visible tell.
- Flex the integrated bracelet. Links should move with light resistance and no rattle. Check the gap where the first link meets the case. A visible seam means poor machining.
- Study the dial under a 10x loupe. Compare text weight, index height, and date wheel font against reference photos. Print that runs thin or heavy in the wrong places is common on this reference.
- Check the crystal. It should be sapphire with an anti-reflective coating on the inner surface. Blue or purple glare on mineral glass is a downgrade.
- Time the movement over 24 hours in several positions. Note the beat rate with a timegrapher or by ear. 28,800 vibrations per hour equals 8 beats per second. Rate drift past 15 seconds per day in one position points to a cheap escapement.
- Work the crown. It should turn with steady resistance, hack when pulled to the time-setting position, and change the date without sticking. Rough winding or a wobbly stem means the case tube is undersized.
- Weigh the watch on a kitchen scale. A steel build in this size class should land within a few grams of the genuine weight. A light watch often means a hollow bracelet or a plated brass case.
Movement tiers
Japanese automatic
Miyota 9015 based builds run at 28,800 vph with about 42 hours of reserve. They keep time, accept regulation, and cost less to replace than to repair.
Chinese clone
Clones of ETA and other Swiss designs are the budget option. Expect louder rotor noise, rougher finishing, and a shorter service life.
Swiss parts
A rebuilt Swiss movement such as the ETA 2892-A2 is the top replica tier. Parts are easy to source, so a local watchmaker can service and regulate it.
Common tells
- Date window sitting off-center, or a date font that runs too wide.
- Bracelet screws with thread pitch that differs from the genuine part.
- Shallow or dotted clasp engraving.
- Case back engraving that fades under a loupe.
- Water resistance claims above 100 m with no pressure test report.
Legal and customs risk
Counterfeit watches are illegal to import or sell in the United States. Shipments can be seized, and buyers can face civil penalties. Treat a purchase as a risk decision rather than a normal retail transaction.