Duchy of Courland and Semigallia (Mitau) 3 Groschen 1765 - Ernst Johann von Biron (1763-1769)
1.55g. VF/XF.
Mintmaster’s initials I·F·S – Johann Friedrich Schmickert.
KM 26; Haljak 1739 2R; Kopicki 4094 R4. Very rare!
Issue historically associated with present-day Latvia and Poland.