Feb 222012
The Portuguese Sidérale Scafusia is the most exclusive and most complicated mechanical watch ever created by IWC Schaffhausen.
The Portuguese Sidérale Scafusia is the first watch from IWC to feature a patented constant-force tourbillon together with many other complications and individually calculated astronomical displays. Every watch is made on special request and will be unmistakably unique.
Source IWC
