A fake IW327010 is usually identified by the case back engraving, dial printing, crystal coating and overall proportions, since the genuine IWC Pilot's Watch Mark XVIII Edition "Le Petit Prince" uses a solid steel case back that hides the movement. Genuine watches measure 40 mm across the bezel, run the Calibre 35111 automatic movement, and carry a deep, sharply cut Little Prince engraving on the back. Counterfeits typically miss on at least two of those points.
What Is the IWC IW327010?
The IW327010 is the reference number for the Pilot's Watch Mark XVIII Edition "Le Petit Prince" from IWC Schaffhausen. It pairs a 40 mm stainless steel case with a sunburst blue dial, and it runs on the Calibre 35111 automatic movement with roughly a 42 hour power reserve.
IWC fitted the watch with a sapphire crystal coated on both faces, a screw-in crown, and 6 bar of water resistance. The reference shipped on a black Santoni calfskin strap, and it was phased out after the Mark XX arrived in 2022.
Why Is the IW327010 Faked So Often?
The design is simple, popular and easy to copy at a distance, and the blue dial photographs well. Because the Mark XVIII has no display back, a counterfeiter never has to show a convincing movement. That single detail makes the IW327010 one of the more common IWC fakes on the secondary market.
How Do You Spot a Fake IW327010?
Work from the outside in: case dimensions first, then the case back, dial, crystal and paperwork. Most tells sit on the exterior of the watch, so you do not need to open the case.
Does the Case Measure 40 mm?
Genuine Mark XVIII cases measure 40 mm across the bezel, excluding the crown, with a thickness of about 10.8 mm and a 20 mm lug width. Many counterfeits run 41 to 42 mm or sit visibly thicker on the wrist. Calipers settle the question in seconds, and so does the way the watch sits between the lugs of a 20 mm strap.
Is the Case Back Engraving Sharp?
The Le Petit Prince edition carries a deep engraving of the Little Prince illustration along with "MARK XVIII," the reference number, a case number and the water resistance rating. Genuine engraving is cut with clean edges and consistent depth, while fakes often look shallow, blurry or laser-etched with a grey wash instead of a true relief.
Compare the weight of the lettering and the spacing between characters against confirmed photos. Counterfeit batches also frequently repeat one case number across hundreds of units, so a serial search that returns the same number repeatedly is a strong warning sign.
How Should the Dial Printing Look?
- The IWC logo and "SCHAFFHAUSEN" text should be crisp, evenly spaced and level with the dial surface.
- The date window at 3 o'clock should show white numerals in a font that matches the rest of the dial.
- Applied numerals and indices should sit flat and polished, not painted or raised unevenly.
- Lume should be applied evenly across hands and markers, with no overflow onto the dial.
- Sword hands should have polished edges and clean lume inlays with no gaps.
What About the Crystal and Coating?
Genuine sapphire has anti-reflective coating on both faces, which produces a faint blue-violet sheen and a very clear dial in daylight. Counterfeits usually skip the coating entirely or apply a heavy purple tint that dulls the dial. Tilt the watch under a lamp: a genuine crystal almost disappears, while a fake throws glare across the whole face.
Does the Movement Beat at 4 Hz?
Calibre 35111 runs at 28,800 vibrations per hour, so the seconds hand sweeps smoothly with eight ticks per second. Cheap imitations often use a 21,600 vph movement with a choppier sweep, and some use quartz, which ticks once per second. The crown should also thread smoothly with no wobble or grinding.
What Does a Genuine IW327010 Cost?
US retail on the Santoni strap was around $4,950 before the model was discontinued. Used examples commonly trade in the $3,200 to $4,500 range depending on condition and accessories. A "new" IW327010 offered for $150 to $400 is a replica, not a bargain.
Quick Authentication Checklist
- Measure the case: 40 mm wide, about 10.8 mm thick.
- Examine the case back engraving for cut depth and sharp lettering.
- Check that the case number is unique and matches the paperwork.
- Inspect dial text, date font and lume application under magnification.
- Verify the crystal has double-sided anti-reflective coating.
- Confirm a smooth 28,800 vph sweep on the seconds hand.
- Weigh the watch and compare it against published specifications.
Are IW327010 Replicas Worth Buying?
A replica carries no IWC warranty, cannot be serviced by an authorised workshop, and holds almost no resale value. Counterfeit watches can also be seized by customs in the US, which leaves the buyer with nothing. If the Mark XVIII look is the goal, a legitimate microbrand pilot watch delivers the same styling without the risks.