Beautiful german button to authenticate

[Christophorus]

Good evening,
maybe you could help me to identify - authenticate this small uncommon button.
There are no marks, it's extremely strange because all third reich buttons were stamped with the rzm or/and the manufacturer mark!!?
maybe a fake?
Any help would be appreciated,
Thanks
Christophorus

[hallandsen]

button

hi
I think it`s a button from Auswertiges Amt or East Service

[sjl]

Pure military or civil buttons were not RZM stamped - only political organizations as a general rule.