Answer First
IW545173 is not a reference number shown in IWC's public catalog. IWC writes references as IW, then a four digit family code, then a two digit variant. One example is IW5454-07. The string 545173 splits into family 5451 and variant 73. No confirmed IWC model carries that pair. A listing that uses "replica iw545173" sells a copy of an unnamed watch, or copied a code from another listing.
How the Number Gets Used
Replica sellers reuse factory codes. Numbers move between batches. The same code can appear on a 40 mm case one month and a 42 mm case the next. Photos get reused too. Check these four items:
- Case diameter and thickness in millimeters
- Movement name printed on the rotor
- Dial layout and subdial positions
- Strap material and clasp type
Compare those items across listings. If they change, the code is a label, not a spec.
What a Replica Is
A replica is an unlicensed copy. It carries the trademarks of the original maker. It has no factory warranty, no service record, and no resale market. Movements in low cost copies are Chinese clones of older Swiss or Japanese designs. Water resistance claims are common and untested. Plating on gold tone cases wears through to the base metal.
Legal Status in the United States
Counterfeit watches are illegal to import and sell in the US. Customs and Border Protection seizes shipments at the border. Trafficking in counterfeit goods is a federal crime. Sellers face civil suits from trademark owners. Buyers face lower risk than sellers, but the item can still be seized.
Checks Before You Pay
- Ask for the true case diameter in mm, measured with calipers.
- Ask for a photo of the movement with the caseback off.
- Ask for the weight in grams.
- Ask for the return window and who pays return shipping.
- Ask if the seller takes a card. Card networks ban counterfeit sales, so many sellers want bank transfer.
Answers that stay vague are a signal. A seller who cannot state the diameter has not handled the watch.
What Cannot Be Verified
No public source confirms IW545173 as an IWC model. Any spec sheet for it is unverified. Treat dial text, movement names, and limited edition claims tied to that code as marketing copy.