unidentified marking(logo)

I have id the proof marks on the side,(german military reciever proof found on DWM lugers 1914-1918). But i have yet to find the logo on the top of the bolt anywhere on the web. To describe the logo,it looks like a shield with a lion standing on it's hind legs in the middle of the shield, and there is a crown on top of the shield. If anybody has seen this before please let me know.. thanks