I checked some sites which offer N900 for sale and quite cheap too.... what makes me suspicious is that some say land of origin is:

1- Finland (that's ok)
2- China (hmmmmmmmmmm)
3- Germany

So my question is:
1- Where are N900 built?
2- In case different origin? Do they differ in specifications?
3- How can one know that he's holding a genuine phone in his hand.