A Messerschmitt Bf 109 K4 based on a G6/AS unit 'Green 13', the personal mount of Kommodore Walter 'Gulle' Oesau of Stab./JG1 - Paderborn, Germany, May 1944.
It was whilst flying this machine that Oesau met his end, the details of which are not entirely historically clear.
To install just unzip to your Saved Games>Liveries>Bf-109K-4 Folder (if you haven't got one then just create one).
Enjoy and don't scratch the paintwork!
The zip file contains both a censored AND uncensored version of the skin.