1778, Salzburg, Count Hieronymus Collerdo. Silver 20 Kreuzer Coin. Mint Year: 1778 Reference: KM-431. Denomination: 20 Kreuzer Mint place: Salzburg (Austria) Mint Mark: M (Franz Xavier Matzenkopf Jr.) Diameter: 27.8mm Material: Silver Weight: 6.63gm Obverse: Bust of the Count right in clerical robes, titles as Archbishop, Prince of the Empire and Primate of Germany. Latin Legend: HIERO ...