i'm Italian too... i have never had custom problems with fedex... they anticipate every fees ...
but if you try to declare no value item or gift ... probably the real customs will stop the package...
the only thing you can do is to declare that the watch is a fraud from the dealer ....and tell to the customs that you have to get it to proof a fraud ....
if you need some help PM me ...i'm experienced into this kind of problem...
M