I really appreciate the IWC Annual Edition (Catalog) that are published each year. I just got the latest one from Claire Kelly at IWC Australia. This years edition, which has a slight redesign, is probably the best ever.
I been collecting these for the last 10 years and they are a great reference tool. I finally bought my IWC XVI from Watches of Switzerland in Melbourne last year so I have a watch to go with the catalog.
I am looking forward to the next edition which will have the new pilots watches in it.