The short answer
IWC was founded in 1868, so the brand's actual centenary landed in 1968. When a listing shouts "100th anniversary," it usually means one of two things: a copy of a late-1960s Aquatimer or Yacht Club, or a copy of the 2018 "150 Years" pieces that a seller rounded down because 150 does not fit a headline. Both show up in the replica market. Neither is rare. What separates a decent copy from a bad one is how closely the case, dial, and date window follow the reference they claim to reproduce.
What the 1968-era watches look like
The Aquatimer was IWC's first serious dive watch, and the original reference came with an internal rotating bezel, a chunky case that was oversized for the period, and a plain black dial with baton markers. The Yacht Club arrived in the same window with a softer, dressier shape. Those two are the templates behind most "anniversary" replicas you will see. The 2018 side is different: lacquered blue dials, "150 Years" printed on the dial, and the same case architecture as the modern catalog. If a listing mixes a vintage case with a 2018 blue dial, someone is inventing a watch that never existed.
Fake IWC 100 Anniversary Watch Comparison
Why sellers lean on anniversary wording
"Anniversary" sounds limited and expensive without committing to a specific reference number. That is the whole trick. A vague edition name lets a seller skip the details that are easy to check, like case diameter, lug width, or the exact dial layout. I treat the phrase as a prompt to go find the real watch first, then compare. Ten minutes on an auction archive tells you more than any product page.
Where the good copies hold up
- Case profile and lug shape, which are the hardest things to fake and the first things a collector notices.
- Dial printing that stays sharp under a loupe, with markers that sit flat and even.
- Bezel action, especially on inner-bezel dive models where the crown at 2 o'clock should turn smoothly and click.
- Bracelet or strap hardware that matches the era, not a modern clasp bolted onto a vintage design.
Where they fall apart
- Date fonts. The numerals are almost always too fat or too tall compared to the original wheel.
- Lume that glows green when the reference used a warmer tone, or the reverse.
- Engraving depth on the caseback and rotor. "Probus Scafusia" should be crisp, not shallow and washed out.
- Crown size. Anniversary-era crowns are small, and copies tend to oversize them.
How I check a listing before buying
- Find the real reference number and its published dimensions. Write them down.
- Ask the seller for the actual measured diameter and thickness, not the spec sheet.
- Request a straight-on dial photo and a close shot of the date window.
- Ask what movement is inside. A vague answer is an answer.
- Confirm the return window in writing before you send money.
Movement and sizing notes
Three-hand anniversary copies usually run a Miyota 9015 or an ETA 2824 clone, which is fine and easy to service. Chronograph versions typically use an A7750, and that movement adds thickness, so the watch wears bigger than the original. A few vintage-styled pieces use a hand-wound Seagull ST19. All of them are fine on a desk. None of them should go in a pool, regardless of what the listing claims about water resistance.
fake iwc 100 years anniversary watch
Price sanity
A solid three-hand anniversary-style replica sits in the low hundreds of dollars. Chronographs run higher. Anything asking four figures for a copy is priced on the story, not the watch. And if the photos are stock images lifted from a brand catalog, you are not looking at the watch you will receive.
Bottom line
Know which anniversary you are actually chasing, 1968 or 2018, then judge the copy against that real reference. Do that and the label stops being marketing and starts being a checklist.