Ducat

Zell's Condensed Dictionary · 1879 · p. 16

(dük'at.) [From It. ducato, a duchy-because the coin was first i ued by dukes.] Agold coin, minted in Austria, Denmark, Hamburg, Pru ia, Ru ia, and Sweden, having different values ranging from $1.50 to $2.33. [s. 305]