I have had a few IWC reps so I know a little about IWC watches, but I certainly wouldn't call myself an expert. I do know this though and that is that this one isn't a popular Gen or rep. Sometimes you'll find crappy reps cheap at places like dh gate.
There are some excellent reps that have been done of some of the more popular IWC models. Go have a look at one or two of the TD's web sites or have a look at the nwbig thread & you will find some really nice IWC reps.