1 Ducat - Ferdinand I Klagenfurt

Ferdinand I struck ducats at Klagenfurt during a period when his administration was aggressively centralizing Habsburg mint operations across the Austrian hereditary lands — a policy that would eventually shutter many regional facilities entirely. The Klagenfurt mint's active window for ducats of this type is narrow, which directly accounts for the type's scarcity relative to contemporary Vienna or Graz issues.

Fr#42 is among the rarer Ferdinand I ducat attributions in Friedberg's gold census.