Duro; siege of Gerona by the French; emergency coin struck by Ferdinand VII; king of Spain; Obverse: below: stamp with inscription 'FER VII'; above that empty area within shaded border. Reverse: on the upper side: stamp with inscription: 'GNA 1808 Un Duro'; below that is an empty area within a shaded border; Gerona; Ferdinand VII (King of Spain); anonymous; 1808; silver (metal); striking (metalworking); d 4 cm x w 26.31 gr