The short answer
A convincing IW322031 copy comes down to four things: case dimensions that match the reference within a fraction of a millimeter, a dial that holds up under a loupe, a movement that keeps time and can actually be serviced, and finishing that survives daily wear. Boxes, papers, and "1:1" stickers do not matter. Nothing on a replica is 1:1, and a seller who leads with that phrase is telling you what they think you want to hear.
Start with the case
Measure it yourself. Diameter, thickness, and lug width should land on the numbers IWC publishes for the reference. A millimeter of extra thickness usually means a thicker movement or a spacer inside, and on the wrist thickness gives a copy away faster than any dial detail.
Then look at the brushing. On a well-finished case, the transitions between polished and brushed surfaces are crisp and straight. On a cheap one, polish bleeds into the brushed area and the lugs look soft, almost melted. Run a fingernail along that edge. If it catches, the bevel is there.
Dial, hands, and printing
- Printing should be sharp, not fuzzy, and the same weight across every marker.
- Applied indices should sit flat and catch light evenly, with no glue visible at the base.
- Hands should reach the track, not stop short of it.
- If your build has a date, the window should be centered and the disc flush behind the dial.
A loupe helps. Check in daylight first, though. If it looks wrong at arm's length, no macro photo will save it.
Movement and serviceability
Most copies in this size run a Swiss ETA 2892-A2, a Sellita SW300, or an Asian equivalent. The Swiss route costs more and buys you spare parts, known service intervals, and a watchmaker who will actually touch it. Ask which movement is inside, then ask what happens if it stops. If the answer is "we'll replace it", the movement is disposable.
Bracelet and strap
A bracelet should taper where it should taper, the clasp should close with a firm click, and the end links should sit flush against the case without rattle. Sizing screws should thread cleanly. This is where cheap builds are worst, and it is also the cheapest thing to upgrade later, so do not let it kill the deal.
What I would skip
Skip listings that show only renders. Skip sellers who will not send a timestamped photo of the actual unit. Skip "Swiss made" stamps on a caseback carrying the wrong reference engraving. Confirm the reference specs on IWC's own site before you buy, because factories revise quietly and last year's good batch is not this year's.
Questions to ask before paying
- Which movement, and is it Swiss or Asian?
- Actual measured diameter and thickness?
- Water resistance tested, or just claimed?
- Can I see a real photo of this exact piece?