That was one of my favorite IWC. The plexy, the round dots, the lack of date... A feast for the eyes. The back was not bad, either... Best, Nicolas ...
The IWC finishing is industrial and clean. Quite special at the end of the day for these naughties specimens (but you can als see it on the vintage pellaton)
It has been a while since I've seen the original Portuguese 7-Day, and it remains my favorite. This steel model you found is the definitive beauty from the series, but I had a chance to see the platinum model around four years ago. They're all masterpiece...