Short answer
The IW545105 is an IWC reference number in the Portugieser line, 5451 series. Counterfeit and replica versions exist. None match the original watch. A replica differs in case finishing, dial print, hand shape, movement finish, and paperwork. Ask for the reference, the serial, and a service record. Check each item against IWC records before you pay.
How to Buy Fake IW545105 Watches Online Safely
Public spec sheets for every 5451 variant are not consistent across sellers. Confirm the exact model and its metal with IWC or an authorized dealer first.
What the reference number tells you
IWC reference numbers split into families. 5451 points to the Portugieser line. The trailing digits mark case metal, dial color, and strap. Two watches that look the same can carry different references. Buyers who skip this step compare a steel watch to a gold one and judge both wrong.
Where replica IW545105 listings show up
- Marketplace sites with stock photos and no serial images.
- Social accounts that move the deal to a chat app.
- Clone pages that quote one price for any reference.
- Auction lots with blurred casebacks.
Checks that separate a replica from the real watch
- Case finishing. Look at the lug tops under 10x. Factory brushing runs one direction. Replica brushing wanders.
- Dial print. The IWC name and Schaffhausen text sit on a clean baseline. Replica print sits heavy or thin in one spot.
- Hands. Original hands are flat with polished edges. Replica hands show rounding.
- Movement. In-house calibers carry a signed rotor or bridge and a perlage finish. Replica rotors come unsigned or engraved with the wrong caliber number.
- Caseback engraving. Depth and font weight stay constant. Laser cuts on replicas run shallow.
- Weight. Gold references weigh more than steel. A gold replica at steel weight is a plated case.
- Papers. Box, warranty card, and booklet carry matching numbers. Replica kits print one number on all three.
Price check
Portugieser models sell new from about $7,000 to above $30,000 USD, by metal and complication. Replica listings ask $300 to $900. A genuine watch offered far under market needs a written reason. No box, no papers, sold as is is a reason to walk.
Fake IW545105 Review: Which Replica Tier to Buy First
Before you buy
- Ask for video of the seconds hand sweep and the crown action.
- Request a macro photo of the caseback reference and serial.
- Pay with a method that reverses. Wire and crypto do not.
- Have a watchmaker open the case. Budget $50 to $150 for the check.
Limits of any guide
Photos hide detail. A watchmaker with the watch in hand and a loupe settles the question. No page replaces that step.