The best replica IW323746 to buy is the top-tier automatic version: a Japanese or Swiss-base movement inside a case that follows the original profile within a tenth or two of a millimeter, a sapphire crystal with colorless inner anti-reflective coating, and dial printing that holds up under a loupe. The criteria below are ranked in the order you should check them before paying, because the case and the crystal decide whether anyone notices the watch at all.
Why the IW323746 gets replicated at all
IWC's steel references in the IW3xxxxx numbering range share traits that translate well to the replica market: a restrained case, a legible dial, and a layout with few parts that are hard to machine. The flip side is that this reference is not one of the mega-popular models every workshop builds, so the number of versions in circulation is smaller than what you see for a Submariner or a Speedmaster. Fewer versions means less choice, but it also means the good one is easier to spot once you know the tells.
Case and profile
The case is where the price gap shows first. A serious version matches the original diameter, thickness, and lug-to-lug measurement, and the lugs flow into the caseband instead of sitting on it like separate blocks.
- Pros of the top tier: correct thickness, brushed and polished surfaces that meet at crisp edges, lug holes placed where the original has them, caseback engraving cut deep rather than printed faint.
- Cons of the cheap tier: a case that is noticeably thicker, polishing that rounds every edge, and shallow caseback text that disappears in low light.
Use case: if you wear the watch with short sleeves and the profile is visible from the side, buy the tier with the correct thickness. If it lives under a cuff, this is the one area where you can save money.
Dial, hands, and printing
Dial work is judged at arm's length more than under magnification. Check the weight of the brand text, the spacing between the date window and the nearby markers, and whether the applied markers sit level.
- Pros of a strong dial: sharp printed text, markers with clean edges, hands with flat polish and no burrs at the pivot.
- Cons: text that is too bold or too thin, markers that sit a degree off, lume that is uneven or the wrong tone.
Use case: this is the criterion that decides whether a stranger notices anything. Spend here if you wear the watch in public.
Movement and timekeeping
Most versions run a Japanese automatic or a Chinese copy of a Swiss design. Both can keep good time. What matters is whether the movement is sized for the case, since a small movement forces a thick spacer and a thick case, and whether the date snaps over near midnight instead of drifting through the evening.
- Pros: hacking, hand-winding, a smooth sweep, date change within a few minutes of midnight.
- Cons: a rotor that rattles, an early date change, a crown that feels gritty when you screw it down.
Use case: daily wearers should ask the seller for a timegrapher photo before shipping. Anyone rotating several watches can accept a cheaper movement.
Crystal and anti-reflective coating
Original-grade anti-reflective treatment sits on the inside surface, which keeps the dial readable and leaves the outside scratch-resistant.
- Pros: colorless coating, no blue or purple cast, minimal reflection in daylight.
- Cons: a heavy blue tint, coating applied outside where it smears, a crystal that sits proud of the bezel.
Use case: photography. A tinted crystal ruins photos more than any other flaw, so this matters if you post wrist shots.
Bracelet, strap, and clasp
Whichever option the original ships on, the replica should follow it. On leather, check stitching density, edge paint, and whether the strap tapers at the lugs. On a bracelet, check end-link fit, screw versus pin construction, and how the clasp closes.
- Pros: end links that sit flush with no rattle, a clasp with firm detents, hardware that matches the case finish.
- Cons: gaps at the lugs, folded rather than solid links on cheap builds, clasps that pop open on their own.
Use case: a bracelet version is worth the premium if you plan to wear the watch in water-adjacent settings or sweat heavily. Otherwise a leather strap is cheaper to replace when it wears out.
Which tier to choose
Entry tier
- Pros: low cost, useful as a trial run to see if the size suits your wrist.
- Cons: wrong thickness, weak dial printing, gaskets that offer no real protection.
Use case: someone testing the reference before committing to a better build.
Mid tier
- Pros: decent dial and case, a movement that keeps time, better hardware.
- Cons: often still slightly thick, and finishing that looks fine in photos but flat in hand.
Use case: the sensible pick for regular office wear.
Top tier
- Pros: closest case profile, clean dial printing, colorless crystal coating, movement sized for the case.
- Cons: highest price, limited stock, and a longer wait for QC photos.
Use case: anyone who handles the watch daily or shows it to people who know the reference.
Pre-purchase checklist
- Ask for side-profile photos of the case, ideally next to a ruler.
- Ask for a timegrapher reading with the rate and amplitude visible.
- Confirm the crystal coating is on the inside only.
- Confirm the date changes near midnight.
- Ask about the return window and the shipping method.
Water resistance and honest limits
No replica carries a factory pressure rating you can trust. Gaskets are assembled by hand in small shops, and the caseback seal is the first thing to fail. Treat every version as splash-resistant at best. Rinse it with fresh water after contact with salt or chlorine, and never swim or shower with it, regardless of what the listing claims.