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CHNB Klus Kluser Schloss Alt Falkenstein Collection Gugelmann GSGUGEDUNKERBAA.tif Information Klus Kluser Schloss Alt Falkenstein Ruine AltFalkenstein ber der Klus bei Balsthal auch Ruine Blauenstein genannt Klus Federzeichnung Aquarell Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEDUNKERBAA