Osnabruck? German state coin. Help to identify

Hello experts.

Can you help me to identify this coin?

information that I have:
14mm
uniface
billon



I made a search on Zeno and Krause. But I didnt find it.

Best regards
Turi

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.