Hi Andy and Anders,
As per its W.Nr, this machine is an Erla Leipzig built Bf 109 G-14/AS W.Nr. 461 174; it was found and photographed in Elbing after 10 March 1945, at the end of the bitter siege of the city. It is a clear case of a "new" airframe which was field re-engined with a DB 605 A in order to have it airworthy again, an obviously failed attempt...
For the full picture, check this link (picture source: Iwanow 2003, p. 52.):
http://www.flickr.com/photos/2809206...57625539886908
Cheers
Marc