Mainz and some other German cities used this wheel, too.
Here is something from Mainz that is close:
https://www.acsearch.info/search.html?id=829754
Edit: Erfurt is also an option, if there is a letter E above the shield (letter m would be Mainz). This one is dated and not a match, but maybe there is another similar type:
https://en.numista.com/catalogue/pieces110529.html
Maybe someone knowledgeable in this era of German coins can also comment on the shape of yours, and might also be a factor in the ID.