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Silhouetportret van Andreas…
Johann Friedrich Gottlieb Unger (possibly), 1763 - 1804
Silhouetportret van Johann Heinrich…
Johann Friedrich Gottlieb Unger (possibly), c. 1770 - 1804
Johann Friedrich Gottlieb Unger (possibly), 1763 - 1804
Johann Friedrich Gottlieb Unger (possibly), c. 1770 - 1804