You are not. It is from Swiss canton of Solothurn, editing...the denomination is under the coat of arms..it is OR-4? or CR?
It is possible it's made of copper/silver alloy.
Voriax
edit. Yup..4 kreutzer, for some reason it's hard to find an online pic of this coin. Dates somewhere around 1770-1780 I'd say..might be off a bit.