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SNB GUGENTHIGERF. Information Signau Schloss jetzt Ruine Alt Signau Schloss jetzt Ruine Alt Signau Signau Kupferstich CHNB Signau Schloss jetzt Ruine Alt Signau Collection Gugelmann GSGUGENTHIGERF tif Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGENTHIGERF helveticarchives ch aspx ID