Good morning ladies and gentlemen, if any, but are hiding :-)
In any document should be available at least two factors, the availability of the organization that is trusted and the presence of a specialist who is a recognized expert. Second without the first and it is normal practice, but the first without the second, can not be.
Let's just say if you trust your feelings and have confidence, then take it, if not, then it is better not to get involved. Sometimes, the lack of a better paper than its presence :-)
But on the other hand, a paper with the official stamp gives you the right, at the official transaction, if the assessment is wrong and there is a demonstrable fact that you have suffered damage to court. Better for your place of residence, of course :-)
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