An Etymological Dictionary of the German Language/Thaler

by Friedrich Kluge

Thaler, m., ‘dollar’ (three shillings), first recorded in the 15th cent.; an abbreviation of Joachimsthaler for ‘florin from Joachimsthal’ (in Bohemia). From the Ger. word are derived Ital. tallero, Du. daalder, E. dollar.