1915 Austrian One Ducat Gold Bullion Restrike Coin Obverse The laureate head, facing right, of Emperor Franz Joseph I FRANC IOS I D G AUSTRIAE IMPERATOR Reverse The arms of Austria superimposed upon a crowned double-headed Imperial eagle. HUNGAR BOHEM GAL LOD ILL REX A A 1915 High Carat Gold Ducats were produced in high purity gold, 233/4 carats, making them among the highest purity gold coins ever issued for circulation. Thickness Because they have inherited their design and appearance from medieval gold coins, they are very thin compared with modern coins, at just 0.8 mm thick. Diameter:20mm Weight:3.4909g. Feiness:.986