The Archbishopric of Dorpat used an image of St. Peter on one side, and a crossed key and sword inside a shield but I could not find a coin that looks like yours.
Here is an example of a coin with similar devices:
https://en.numista.com/catalogue/pieces142108.html
Generally speaking, we might guess that the coin is from a prince-bishopric (even if it turns out to not be Dorpat). There were some others that used a crossed sword and key, Naumburg, Germany for example.