Silver Cap Badge?

Hi everyone.
Would really appreciate some help with this find.
I've called it a cap badge but there are no signs that there was ever a pin attached to the back.
It is slightly curved and has a design of a two headed eagle, sadly one head is missing.
It measures approximately 5.5cm in length by 3cm wide.
Any thoughts would be greatly appreciated.

I think it is a clock key. As similar as this one.
Sie haben nicht die Berechtigung Links zu sehen.
Registrieren oder Einlogen

Super, great identification