Hello. I mentioned this on what I thought was a related post but there were no answers: So here go's
I'm looking at buying an IWC portuguese form a respected used watch dealer here in Canada. He has the box and papers for the portuguese chronograph, but I was wondering what I should be looking to "match" when I compare the guarantee card and the watch. For example, there is a serial number on the back of the portuguese, but that number doesn't match any of the numbers shown on the guarantee card. Specifically, it does't match the "Artikel-Nr.:" or the "Gehäuse-Nr.:". My intuition was that the "Gehäause-Nr (case number)" would match the back of the watch, but the numbers aren't even close (watch begins 291, and the card begins 310).
If it makes any difference, the watch is 2005.
Cheers,
J