Portrait of Jacob Olycan (1596–1638), before restoration, 1625
Portrait of jacob pietersz olycan. The paintings were restored in 2007. During restoration, technical analysis confirmed what had long been thought, that the poorly rendered coats of arms were later additions not by frans hals (the pigment prussian blue was found, but this pigment was first synthesized in 1706). The decision was taken to over paint the arms. Water soluble paints were used so that the over painting may be easily removed at a later date should this be wanted. Pendant of file:frans hals - portrait of aletta hanemans - mauritshuis 460. Jpg. Object Type: painting. Genre: portrait. Date: 1625. Place of creation: Haarlem. Dimensions: height: 124.8 cm (49.1 in); width: 97.5 cm (38.3 in). Medium: oil on canvas. Depicted People: Jacob Pietersz Olycan. Collection: Mauritshuis.