IW5041
- Production
- 2011–present
- Model
- Portugieser Sidérale Scafusia
- Case material
- Various (made to order)
- Case size
- 46mm
- Movement
- Manual
- Calibre
- Cal. 94900
- Dial colours
- Silver / White
The Sidérale Scafusia shows sidereal time — the day measured against the fixed stars rather than the sun, running about four minutes short of a solar day — alongside a constant-force tourbillon and a perpetual calendar. The reverse carries a star chart calculated for the coordinates the buyer specifies, so no two are quite the same watch. IWC builds them to order.
- A sidereal day runs roughly three minutes fifty-six seconds shorter than a solar day, which is why the two displays drift apart visibly over a year.
Before you ask.
When was the IWC Schaffhausen IW5041 produced?
The IW5041 has been in production since 2011.
What movement does the IWC Schaffhausen IW5041 use?
The IWC Schaffhausen IW5041 runs the Cal. 94900, a manual movement.
How do I check a IWC Schaffhausen IW5041 with Watch Safe?
Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.
Checking a specific IWC Schaffhausen? Look up its serial number in the registry.