It looks like a refurbished unit, whose case has been swapped (and probably that's the reason the simtray code is invalid - Dexined in Finland, anyone?)

This kind of behavor is well known from N900 days. I don't know if CAL might still have the original product code, but if you can in any way verify my theory I would suggest returning the phone for a refund. You can still buy new N9's unlike N900's where I'd say keep it and cross your fingers, as new ones are hard (if not impossible) to find