Help ID unknown metal insignia

[Filip]

Greetings

Got this in the box with other German items, but I'm totally clueless what this might be. It's a 2 piece constriction made of aluminum it seems.
Any info will be appreciated.

P.S. It could very well be German as well.
Sorry for poor photo quality

[Gromow]

Cap badge of a policeman of the Hamburg city.

[Filip]

Thanks!

Filip

[uscob]

Old Model from the 60's.