Wiener pfennig ..trebol ???

[aidab]

This silver piece weights 0.8 gr and it's diammeter is aprox. 16 mm
I think it is uniface and it shows what I think it is a trebol ??

I would appreciate any identification help.
Thanks in advance

[biatec]

Hello,

this is a "Wiener Pfennig" minted by Friedrich der Schöne (1314 - 1330) in Vienna, Lit.: Koch CNA B 209

GGF

biatec