The short answer
A fake IW328083 is a replica of the IWC Portofino Automatic 40. Quality swings more between factories than between websites, so two sellers can list the same reference at $180 and $480 and ship very different watches. Ignore the listing photo and judge the watch that actually arrives.
Before you compare anything, pull up the real reference on IWC's own site. Reference numbers in the IW3280xx block differ mostly by dial color and strap, and a lot of reps get built from the wrong stock image.
What the genuine watch looks like
The Portofino Automatic 40 is IWC's quiet dress watch: a 40mm stainless steel case, thin lugs, a plain three-hand dial, and on most versions a small date window at 3 o'clock. The whole design depends on restraint, which is exactly why it is hard to copy well. There is nowhere for a factory to hide a sloppy stamp or a wobbly index.
Three tiers you will run into
- Budget ($100 to $200). Mineral glass, printed or poorly applied markers, hollow end links, a stamped clasp, and a generic automatic or quartz movement. These look fine in a photo and thin in the hand.
- Mid tier ($250 to $400). Sapphire crystal, applied indices with decent polish, a Miyota or clone automatic, solid end links. This is where most buyers land, and the gap to the next tier is smaller than sellers claim.
- Top tier ($450 and up). Closer case finishing, better dial print, sharper hands, decorated movements. Real differences exist, but the price jump is rarely matched by an equal jump in quality.
Where replicas usually fail
I look at five things in this order.
- Dial printing. Under a loupe, cheap text bleeds and sits heavy. Genuine print is crisp and thin.
- Applied indices. The polished edges should catch light evenly. On fakes, one or two sit crooked or sit too tall.
- Hands. Leaf hands live or die on shape. Replica hands often run slightly short or too flat.
- Caseback and clasp engraving. Depth matters. Laser etching looks gray and shallow compared with stamped or deeply engraved marks.
- Weight and feel. A 40mm steel dress watch should feel solid on the wrist, not hollow.
Questions to ask a seller
- Which factory built this batch, and can you send a photo of the actual watch rather than a stock image?
- What movement is inside, and what beat rate does it run at?
- Is the crystal sapphire, and is it single or double anti-reflective coated?
- What is the strap material, and is the clasp solid or folded steel?
- What happens if the watch arrives with a crooked marker or a dead movement?
Any seller who dodges the first question is telling you something useful.
The part people skip
Counterfeit branded watches are illegal to import into the United States, and shipments get seized. That is not a scare tactic, it is how customs law works. If a parcel disappears, most sellers will not refund you, and no payment processor will treat it as a lost package. Budget for that risk before you budget for the watch.
One more thing worth saying plainly: a good first copy is a fun object, not an investment. It does not hold value, it cannot be serviced by the brand, and it will not fool anyone who handles watches for a living. Buy it because you like how it wears on a Tuesday, and you will be a lot happier with what shows up.