Dated upper right with pen and brown ink "28 Sept 1664" and repeatedly dated "28 Sept 1664" with pen and brown ink on the verso by Constantijn Huygens Jr. (Den Haag 1628-1697 Den Haag)
- The authorship for Jan de Bisschop has been confirmed by Dr. Michiel Plomp, Teylers Museum, Haarlem. First hand assessment, 9 November 2018, Haarlem
- Prof. Dr. Frits Scholten, Rijksmuseum Amsterdam, identified the depicted bust as Philibert van Savoye (1480-1504). Correspondence by e-mail, 11 December 2018.
Constantijn Huygens Jr. (Den Haag 1628-1697 Den Haag), by descent