A fake IW545104 is a replica of an IWC watch from the 5451 reference block. Copies sold under this number run from $60 quartz watches to $500 super clone builds with decorated automatic movements. The genuine watch is Swiss made with an IWC in-house calibre, and the dial print, case shape, and caseback engraving are where the fakes show up.
What does the IW545104 reference mean?
IWC codes a watch with a four-digit family number plus two digits that mark the exact dial, case metal, or strap version. IW545104 sits in the 5451 group, so every variant in that group shares the same case architecture and movement family.
That detail matters when you shop. A seller who ships a 42 mm case for a reference IWC builds at 44 mm, or a dial with the date window in the wrong spot, is not selling a copy of the IW545104 at all. The seller is selling a generic watch with a number stamped on the back.
How do you tell a fake IW545104 from the real thing?
Start with a loupe and IWC's own product photos, then work through four checkpoints: dial print, hands, case shape, and movement. Each one takes a minute.
Dial and hands
Genuine IWC dial print is sharp with clean serifs, and the markers sit even against the chapter ring. Replica dials show fuzzy edges on the text, thick numerals, and applied markers placed a hair off center. Hand bevels on copies look flat under a loupe, while real hands carry a fine polish along the edge.
Case, crown, and crystal
Measure the case with calipers and compare the reading to IWC's spec sheet. Copies land outside the stated diameter by a few tenths of a millimeter, and the lugs feel sharp where the real case is rounded. Crown engraving is another tell: genuine crowns carry a deep, centered logo, and cheap ones carry a shallow stamp.
Caseback engraving and movement
Look at the reference number, serial, and hallmarks under magnification. Genuine engraving cuts into the metal at even depth, while acid or laser copies look shallow and washed out. If the caseback is transparent, check the movement finish, the bridge decoration, and the shock system. A Miyota or Seagull base is common in replicas and a clear sign the watch is not Swiss.
What replica tiers exist for the IW545104?
Replica IWC watches sell in three rough bands. Price moves with the movement, the steel, and how much hand finishing the factory does.
- Budget copies, about $60 to $130. Quartz or low-grade automatic movements, printed dials, mineral glass, and a case that misses the real dimensions.
- Mid tier, about $150 to $350. Reliable automatic movements (ETA clones, Miyota, Seagull), sapphire crystal, and dial print that holds up at arm's length.
- Super clone, about $400 to $800. Cloned case geometry, 316L or 904L steel, decorated movements, and sapphire with an anti-reflective coating on one or both sides.
The tiers differ most at the caseback and in the hand feel. A super clone winds with the same resistance as the real watch and uses the same lug width, so a strap swap works.
Red flags when you buy a fake IW545104
- Stock photos only. Ask for dated QC images of the actual watch: front, back, crown, clasp, and lume.
- A price under $100 with a "Swiss made" claim attached.
- No named movement. A serious seller knows the base calibre and can send a photo of it.
- A seller who cannot state the case diameter to the decimal.
- Countdown sales or pressure tactics that block a second opinion from a forum or a watchmaker.
Frequently asked questions
Is a fake IW545104 worth buying?
It depends on why you want it. If you like the look and accept that the watch has no IWC service, no spare parts, and no resale market, a mid-tier or super clone gives you a wearable watch for a fraction of the real price. If you want a warranty or an asset that holds value, buy the genuine reference instead.
How much does a replica IW545104 cost?
Most sellers list between $150 and $500, with super clone builds at the top of that range. Anything under $60 is a quartz fashion watch with an IWC-style dial, not a replica of the reference.
Do replica IW545104 watches use Swiss movements?
In most cases, no. The phrase "Swiss movement" in a replica listing means a Chinese or Japanese ebauche that was assembled or regulated in Switzerland, not an IWC calibre. Ask for the base movement name and a movement photo before you pay.