Hi Ronny!
Yes, you are talking of a magic subject for plastimodelists...I do have one picture for you with only the werknummer. Check this site
http://www.luftwaffe39-45.historia.n...ses/welter.htm
But, like you and so many others I never saw the entire aircraft. Only his single Me 262 A-1 with SN-2...So, we will have to wait that the book the author is going to finish becomes available....Unfortunately..( Sun Tzu would tell: information is power...)
Cheers for you and letīs wait the book!
Adriano