This version of the Portuguese is the thinnest link one because it's based on the original movement (the Calibre 982). The movement is really just so gorgeous. You could teach a watchmaking class off link this movement because everything is laid out so clearly. As for the case, it's in platinum, which is unusual compared link to a lot of IWCs. I was really, really tempted to keep it, but it's one of those things where it's just physically a little bit too big for me.
The watch overall boasts very wearable-sounding dimensions – the case is 40mm x 12.05mm and water resistant to 50 meters. You link could, of course, object that this would be an even more historically resonant link watch in a smaller diameter, but after all, 40mm is hardly a Brobdingnagian dimension, and the width-to-thickness ratio makes for link a watch you'd expect to feel quite comfortable on the wrist.