 The coins were minted in the Imperial Mint in Vienna.The Free City of Kraków created in 1815 by the Congress of Vienna was granted the right to introduce its own currency but it chose to enter the monetary union with the Kingdom of Poland and did not implement the right to introduce its own currency until 1835.Between 1815 and 1835 the złoty of the Congress Kingdom of Poland was the official currency of the Free City of Kraków.