IACOBI : D : G : DVCIS : CURLANDIÆ : & :
SEMGALLIÆ (Translation: Jacob Dei Gratia Ducis Curlandiae Et Semigalliae Jacob, with God`s grace, Duke of Courland and Semigallia)
Reverse description
Shield with eagle beside shield with horseman, all surrounded by legend.
Reverse script
Latin
Reverse lettering
MONETA
· NOVA · ARGENTEA : ANNO : 1645 : (Translation: New silver coin of the year 1645)