Moderators please forgive me if this isn't allowed, i'm not trying to spam the forum. I am not connected in any way with this dealer (apart from being a happy customer).
If you are in Berlin try these people http://www.antikmarkt-berlin.de/index.php?id=59&L=1 AKM Depot stocks all kinds of interesting militaria, Imperial German , Third Reich and cold war items. Very easy to find as they are in the railway arches of Friedrich strasse railway station.