Hallo Christian,
Great work you did there; it is precious to see on which space which plane was gathered. Much appreciated; it'll be useful for all new emerging pics.
As for your W.Nr., this occurrence remind me the one of Bf 109 G-14 W.Nr. "262818" painted on its tailplane though it's true W.Nr., found on the manufacturing plates, was 462818...
http://www.flickr.com/photos/2809206...57625539886908
http://www.flickr.com/photos/2809206...7625539886908/
Cheers
Marc