Nice bus if it's as solid as claimed, but I agree, that's pretty strong money.
It looks like a German delivered 9 seat stationwagon that was retrofit with a Helsinki interior by Westfalia, but that cabinet where the fridge should be isn't from a Westfalia as well as the drawers where the side jumpseat should be. They came standard with a 1600 in Europe, the type 4 was optional.
Aside from the missing gas/electric fridge and sink it's a really cool camper, that full width bed and full pop top are pretty much my idea of the perfect layout, sleeps up to 6 or lots of room for a small family.
I'd want to look underneath reaaaaalllyy closely, 99% of those ex Germany buses have some rather advanced cancer hiding in the rockers and floors, they weren't stingy with the salt over there either.