Hello Oberst
I do know that he was flying Bf 109 G-5/AS (W.Nr. 110 256) when he was shot down in aerial combat near St Andre on 12 June 1944. There are several photographs taken on the occasion of his 200th victory on 25 July 1944 included in Aircraft of the Luftwaffe Fighter Aces Vol. I by Barbas which depict what is identified as a Bf 109 G-6. He had claimed 200 victories by the end of July 1944. I am including what I have on this ace in case it may be helpful. Any comments or corrections to any of this will be most welcome.
http://www.megaupload.com/?d=Y4VFL3DX
Horrido!
Leo