Thanks Jim,
My posting should not be seen as a critique of the lists availabe - or the people who has been generous enough to provide access to these information for free.
Quite the contrary. The access to these lists in itself is the very reason that I able able to pose the question regarding the information.
My guess is that he was operational in JG51 from appr. mid-1942, cf.
http://www.danishww2pilots.dk/profil...alpha=h&id=160
Mikkel