Short answer
Replica IW323728 watches are counterfeit copies of an IWC Ingenieur Automatic from the 3237 reference block. Prices run from about $70 for a quartz model to about $600 for a high-grade copy with an Asian automatic movement. A replica has no soft-iron anti-magnetic cage, no IWC service, and no warranty. US Customs and Border Protection can seize the shipment, and the money is gone.
What IW323728 refers to
IWC builds reference numbers from a model block plus variant digits. The 3237 block covers Ingenieur Automatic models. The last two digits mark case metal, dial color, and bracelet or strap. Published data on the exact -28 variant is thin. Confirm case size, dial color, and bracelet with IWC or an authorized dealer before you treat the number as a spec sheet.
Ingenieur references share traits. The case is stainless steel on most variants. The bracelet is integrated, with H-shaped links and a hidden clasp on some versions. Water resistance is listed at 12 bar on several Ingenieur models. The line exists because of magnetic fields: IWC fits a soft-iron inner case around the movement on many references and rates resistance in A/m. Replica makers skip that part. A genuine IWC movement in this line runs at 28,800 vph with a Pellaton winding system. Power reserve lands near 44 hours.
Replica tiers and prices
- Quartz, $60 to $120. Alloy case, printed dial, date window off center, seconds hand that ticks once per second.
- Entry automatic, $120 to $250. Asian 2813 movement at 21,600 vph, mineral glass, hollow end links, stamped clasp.
- Mid grade, $250 to $450. Asian 2824 clone at 28,800 vph, 316L steel case, sapphire crystal, solid end links, 5-screw bezel.
- High grade, $450 to $700. Decorated movement, bridge work that copies the winding system, anti-reflective coating, better brushed and polished case lines.
Prices move with the seller, not the watch. The same factory output sells at three price points on three sites.
Inspection checklist
- Bezel screws. Count them and check that every slot points the same direction. Misaligned slots show up in photos at arm's length.
- Bracelet end links. Gaps at the lugs are the first tell on an integrated bracelet.
- Dial printing. Zoom 10x on the IWC logo and Schaffhausen text. Letter spacing and ink weight give it away.
- Date wheel. Check the font, the centering in the window, and whether the date flips at midnight or drifts past it.
- Movement. Ask for a timegrapher photo. Rate within plus or minus 10 seconds a day, amplitude above 250 degrees, beat error under 0.5 ms.
- Caseback engraving. Reference numbers, serial numbers, and the IWC mark should be cut, not laser-printed on the surface.
- Magnet test. Hold a fridge magnet near the case. A replica gains or loses time. A genuine Ingenieur with the soft-iron cage does not.
Water, service, and resale
No replica is pressure-tested. Gaskets are thin or missing. Do not swim, shower, or dive with one. IWC will not service a counterfeit and will not return it. Independent watchmakers can fit a new movement, but parts for the case and bracelet do not exist outside the counterfeit supply chain. Resale value is near zero. A used genuine Ingenieur holds value and can be serviced for decades.
Legal facts in the United States
Counterfeit watches are illegal to import. CBP seizes them at ports and mail centers, and the buyer loses the payment. Selling a counterfeit is trademark infringement and carries civil damages. Buying one for personal use is a risk with no upside beyond the look on the wrist.