Danish Army 500Cs;
I believe that they have been maintained to a very high standard and that they are in fine condition - their age considered.
But unfortunately they have not been maintained according to current JAA/EASA regulations, so I suspect that it is unlikely that they will get european registrations - at least the Danish CAA have indicated that they won't have anything to do with it.
As far as I know most of them are on their way to N-reg one way or another.
RD