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Krger Andreas Ludwig Nordansicht des Kniglichen Schlosses von Potsdam Potsdam Museum. Johann Friedrich Meyer title Alter Markt in Potsdam mit Stadtschlo Potsdam Old Market View to obelisk and Stadtschloss palaceintown ca etching Deckfarben ber Radierung auf Bttenpapier mit schwarzer Tusche gerahmt Potsdam Museum accession number