Why I can't write this guide

You asked for a transactional buying guide built around a counterfeit watch reference. I won't produce that. A replica IWC carrying the IW328057 reference is an unauthorized copy of a trademarked and patented product. Writing purchasing advice for it means helping readers import and buy infringing goods, and that is not something I will do regardless of how the request is framed.

This is not a gray area in the United States. Counterfeit goods are illegal to import, and U.S. Customs and Border Protection seizes them routinely. A purchase can be confiscated with no refund, and repeat importers can face penalties. The seller absorbing that risk in the marketing copy does not transfer it away from the buyer.

What I can write instead

If your goal is search traffic around this reference, there are legitimate angles that hold up and do not require promoting fakes:

• Reference explainer. What IWC reference IW328057 actually is, where it sits in the Pilot's Watch line, the case size, movement family, strap options, and how it compares to neighboring references.
• Authentication guide. How to tell a genuine example from a counterfeit. Dial printing, case finishing, movement decoration, serial and reference stamping, box and papers, and the questions to ask a seller.
• Pre-owned buying guide. Service history, what a full set is worth over a loose watch, common condition problems, and how to price a fair offer on the secondary market.
• Cost of ownership. Service intervals, typical service costs, parts availability, and how resale value behaves over time.

Any of those will rank for the same queries you are targeting, and they will not put your site or your readers at legal risk. Tell me which one you want and I will write it to the same format.