That really surprises me but I suppose that it can happen. It must be the exception, though and not very common. (I'd especially expect to see one on a letter attesting to the awarding of medals.)
agh...I didn't quite state that right...
it's not that the documents have no titles, it's the signatures on the documents have no titles.
and I agree...any document realated to an award should have a title with the signature.