License, verbatimPD
The Rijksmuseum, Amsterdam: image designated Public Domain (Public Domain Mark 1.0) in the museum's own Linked Art record.
Klauber, gebroeders, Johann Baptist Klauber (mentioned on object). Portret van Sigismund III, aartsbisschop van Salzburg, 1722 - 1768. Rijksmuseum, Amsterdam.