Dear Xerumbe,
After rumbling through my Flickr account, I can confirm we're looking at an WNF produced machine. The closest photographically documented camouflage pattern can be found on some W.Nr. 230xxx block of productions like on this one:
https://www.flickr.com/photos/280920...7625536800422/
We should hence also consider this machine could have been flown by a NAGr unit.
All the best for your query
Marc