Excellent, Rémi !
You caught one of those Erla and WNF built Bf 109 G-6 with RLM 02 blotches applied over their factory camouflage:
Erla:
Bf 109 G-6 W.Nr. 410 061, former 5.(F)/123, Wunstorf, Autumn 1945. Source: collection Mann via Hildebrandt 1989, Cover page.
http://www.flickr.com/photos/2809206...7625486305536/
http://www.flickr.com/photos/2809206...7625486305536/
WNF
Bf 109 G-6 W.Nr. 20 790, II./EKG(J) ?, Fassberg, Summer 1945. Source: ww2images.com.
http://www.flickr.com/photos/2809206...7625486334554/
http://www.flickr.com/photos/2809206...7625486334554/
http://www.flickr.com/photos/2809206...7625486334554/
Your pic seems to be taken before surrender; it is thus unique.
Cheers
Marc