Short answer
A fake IW328078 gives itself away in four places: the reference and serial stamping between the lugs, the cut depth of the caseback engraving, the print on the dial, and the movement behind the display back. Check those four before you look at the price or the box.
Best Fake IW328078V10: Buying Guide
Confirm what IW328078 is
IWC reference numbers use four digits plus a suffix, and the suffix marks the dial and strap variant, not a different watch. Published specifications for IW328078 differ by variant, so pull the case size, calibre and dial layout from IWC before you compare a watch to anything. Treat a seller who cannot name the calibre as a risk.
How to Identify Fake IW328078V9 Watches
The reference and serial are stamped into the case between the lower lugs. Ask for a sharp photo of that area. Genuine stamping is cut into the steel with square shoulders. Replica stamping is laser-marked in most cases: shallow, with soft edges and a sandy texture under a loupe.
Caseback and engraving
IWC cuts caseback text. Letters have flat tops and consistent depth. Replica casebacks are stamped or cast, so edges round off and depth varies across the text. Two strings get misspelled on replicas: "Schaffhausen" and "Probus Scafusia". Read every letter. Check the caseback thread too. Genuine threads are cut clean and the back seats with light pressure.
Dial and hands
Look at the applied indices under a loupe. Genuine indices sit flush with the dial surface and the lume fill is level inside the frame. Replica lume sits high or leaves a gap at one edge. Date windows on replicas carry a bevel that catches light; genuine windows are straight-walled. Hand length matters as well: the minute hand should reach the minute track, and the seconds hand should pass the chapter ring without touching it.
Movement
If the watch has a display back, put it on a timegrapher. IWC's current in-house calibres run at 28,800 vibrations per hour, which reads as 8 beats per second on the machine. A reading of 21,600 vph (6 beats) means the movement is not the calibre the seller claims. Rotor finishing is the second tell. Replica rotors show laser-applied stripes that stop short of the edges, and engravings that sit on top of the finish instead of cutting through it.
Crown, crystal, bracelet
The crown engraving on a genuine IWC is deep enough to catch a fingernail. Replica crowns look correct in photos and feel vague in the hand. Sapphire with anti-reflective coating shows a blue or purple tint at an angle on one side. A replica ships with coating on the outside only, or with none. On bracelets, check the gap between the end links and the case. A visible sliver of daylight on both sides points to aftermarket parts.
Papers, box and seller
IWC offers an extended warranty when the owner registers the watch, so registration status is not a test on its own. Box printing quality is a weak signal as well, because replica boxes have improved. Price is a filter, not proof. Compare the asking figure with sold listings for the same reference. A price far under the market for a steel IWC automatic needs an explanation.
Checklist before you pay
- Photo of the reference and serial between the lugs.
- Macro shot of the caseback text, every letter readable.
- Macro shots of the dial at 12, 3 and 6.
- Timegrapher printout or a video showing rate, amplitude and beat error.
- Movement photo with the rotor edge in frame.
- Written return policy and payment by a method with chargeback rights.
If you already bought one
Take the watch to an IWC boutique or an independent watchmaker with a timegrapher and ask for a written opinion. In the US, selling counterfeit goods is illegal, and a card issuer can reverse the charge when the item is not as described. File the dispute before the return window closes.