Bonjour, est-ce que quelqu'un pourrait m'aider à identifier cette pièce? J’ai cherché dans la directions des pièces médiévales Françaises et Le Royaume de Jérusalem, mais sans succès. J’ai eu une suggestion de quelqu'un de numista : un Soldino de Genua
It is, with little doubt, a soldino from the republica di genua. It is the version with a point under the castle’s door. They exist apparently in dated and not dated versions. I cannot tell which one it is because exactly the part where the date could be is missing. The legend should be CONRADUS II RO REX IV around the cross. What is still readable is US II RO REX. The legend around the castle is DUX GUB REIP GEN (date) and GUB REI is still (more or less)readable.
New picture, where you can better see all this and a link with more info