Alex, DZ466 is well-documented. It was this second Mosquito I was interested in and I seem to have found the answer in RS563.
I found a bit more information on the other contenders as well:
We can exclude NS899 as it came down in allied territory (crew safe). (
http://www.rafcommands.com/forum/sho...-613Sqn-1-3-45)
NS859 came down near Bergen with both crew KIA in the middle of the night. The chances of that airframe being recoverable while both crew were killed seems unlikely, plus we don't know the fuselage code. (also:
http://www.chronicles-of-the-luftwaffe.de/?p=799)
Therefore it is highly likely that Cirkus Rosarius indeed obtained RS563. But the airplane apparently survived the crash in good condition, while the crew were KIA. Were they heavily wounded when they came down and did they succumb to their wounds, or was there foul play? It was a daytime crash and many locals weren't overly kind to allied airmen landing on their territory. Even German pilots who were shot down often went through some scary moments, as angry locals often assumed they were allied airmen.