In context of overlay "Things" – Sculpture – https://osm.org/node/12387954750 via StreetComplete 59.3:

Titel "9. November 1989"
Künstler: Theo Rörig
Material: Sandstein

Attached photo(s):
https://westnordost.de/p/252659.jpg
https://westnordost.de/p/252660.jpg