This is a photo of the Gebietsführer of Gebiet Ost-Hannover.
Could it be that this is Bannführer Helmut Eiffert, who was (also) Gebietsführer in Ost-Hannover?
Admin edit: sorry Mike but that link is not permissible under current forum policy.
He is mentioned in the 1944 SHAEF report as being the K-Gebietsführer of Gebiet 41 Ost-Hannover (rank at the time - Hauptbannführer). No picture yet unfortunately.