A replica IW938907 is a copy of a watch sold under the reference IW938907. We could not confirm that reference in IWC's public catalog, and no auction record we checked lists it. Treat a listing that uses it as unverified until the seller shows the caseback engraving, the paperwork, and a photo of the movement. If the seller cannot name the model line, the number may be invented to catch search traffic.
Step 1: Confirm the reference exists
IWC references use the letters IW plus six digits, such as IW371617. The format of IW938907 fits that pattern. Format alone proves nothing. Ask the seller for the model name, the case diameter, and the caliber number. One reference maps to one model and one spec set. A listing that offers IW938907 in three case sizes with two movements has a problem.
Step 2: Compare five specs
- Case diameter and thickness in millimeters. Ask for caliper photos.
- Lug width. Measure the strap you plan to fit.
- Crystal. Sapphire with anti-reflective coating on both faces is the standard.
- Water resistance rating. A claimed 100 m needs a screw-down crown and a gasket photo.
- Caliber and beat rate. 28,800 vph (4 Hz) is the common figure for this class of movement.
Step 3: Read the dial and caseback
Macro photos at 3x show print quality. Check the index edges, the date window cut, and the depth of the caseback engraving. Replica casebacks often use laser etching that reads flat. Factory engraving has a bevel you can see at an angle. Ask for a photo with raking light across the caseback.
Step 4: Inspect the movement
Ask for a photo of the movement with the rotor turned aside. Clone movements copy the layout, not the finish. Look for perlage under the balance, blued screws, and the jewel count. A 21-jewel movement in a case that should hold 25 jewels is a mismatch. A timegrapher screenshot should show amplitude above 250 degrees and a rate inside plus or minus 10 seconds per day.
Price bands in the US market
Replica IWC listings group into three bands:
- $250 to $450: mineral glass, stamped caseback, low-grade movement.
- $450 to $900: sapphire glass, clone movement, closer dial print.
- $900 to $1,800: high-grade clone or Swiss movement, better case finishing.
Genuine IWC steel watches sit in the $5,000 to $12,000 range. A replica priced near the genuine level is a misrepresentation, not a bargain.
Legal position in the US
US law bars the import and sale of counterfeit goods. Customs and Border Protection can seize a shipment, and the buyer can lose the payment with no refund. The Federal Trade Commission treats counterfeit sales as a deceptive practice.
Questions to send the seller
- What model name and caliber does IW938907 match?
- What is the measured case diameter and thickness?
- Can you send a movement photo with the rotor turned?
- Is the crystal sapphire, and does it have coating on both faces?
- What is the return policy if the item is seized at customs?
A seller who answers all five with numbers and photos is easier to judge than one who answers with adjectives.