Help to identify

[aidab]

Hi,

I would appreciate any help to identify this silver little coin. It's actual weight is 0,6 gr.an it's diammeter is 12mm

Thanks in advance.

[pinpoint]

Pfennig , Konrad von Wittelsbach , 1183 -1200 , Erzbistum Mainz
ref.nr : Walther 34

Greetz , Pinpoint

[QVINTVS]

I have never see, a coin like this! Thank you for showing.

[aidab]

Thanks to Pinpoint for his help