The short answer
Skip the cheap ones. The replica IW327013 worth buying is the 40mm steel version with the blue sunburst dial and a Sellita-based automatic, the tier sellers usually call super clone or 1:1. It is the only one that gets the case thickness, the date position, and the crystal coating close enough that you stop noticing the flaws after a week. Everything below that price point is a costume piece with mushier printing and a rotor you can hear across a room.
Below are the alternatives I would consider, plus the checkpoints that separate a good IW327013 from a bad one.
What the real IW327013 is
When people search this reference they usually mean the Mark XVIII Le Petit Prince: 40mm stainless steel, around 11mm thick, blue dial with white printed numerals, date at 3, and the 35111 calibre inside, which is a Sellita SW300 underneath. IWC rates it at 42 hours of power reserve and 60 meters of water resistance, with a soft iron inner case for magnetic shielding. That matters for the rep conversation because a simple three-hander with printed markers is one of the easier watches to copy well. No guilloche, no applied numerals, no complications. The margin for error is small.
What to check before you pay
- Case thickness and profile. Ask for caliper photos in QC if you can. Rep cases often run half a millimeter thick, which changes how it sits under a cuff.
- Dial printing. The white numerals should be sharp at the edges. Blurry or gray print is the fastest tell.
- Date window and font. The aperture should sit square with the crown and the numeral should be centered, not riding high.
- Crystal coating. The gen has antireflective coating on both sides. Cheap reps skip it or leave a purple haze that flares under office lights.
- Movement. A decorated clone with proper engraving on the rotor beats a Miyota if you care about the caseback view. If you do not, the Miyota winds smoother and costs less.
- Lume. Charge it for a minute and compare. Weak, patchy lume is common on the budget tiers.
Top pick
The high tier 40mm with the Sellita clone and double AR sapphire. It nails the dial color, which on this reference is a deep blue that shifts to near black indoors, and the case finishing is brushed on top with polished flanks in the right places. The crown threads cleanly and the date flips without a grind. On the wrist it reads like the real thing from arm's length, which is the only distance that matters in normal life.
The alternatives
- Mid tier with a Miyota 9015. Same case and dial, less movement decoration, rotor a touch noisier. Good if you want a beater and never take the back off.
- Black dial version. If you are not sold on the blue, the black Mark XVIII layout is the safer everyday look and the reps tend to get the matte finish right more often.
- Budget tier. It looks fine in photos and disappointing in person. The printing, the AR, and the strap are where the money went missing.
What you give up
Plenty, and you should go in knowing it. The movement is not Swiss-serviced in a real watchmaker's hands, water resistance is a guess, and the strap is often the weakest part, so budget for a replacement leather strap in the first month. The bigger point is intent. Wearing a rep is one thing, reselling one as genuine is fraud and it is also the fastest way to get burned by someone doing the same to you. Do not swim in it, do not take it to a boutique for service, and do not try to sell it.
Buying checklist
- Ask for dated QC photos of the dial, the date window, and the caseback before shipping.
- Confirm the return window in writing. Ten days is standard, no return policy is a red flag.
- Pay with something you can dispute.
That is the whole review. Pick the Sellita-based 40mm in blue, check the printing and the date alignment, and spend the savings on a decent strap.