A detailed 1590 engraving by Jan Harmensz. Muller, capturing the likeness of the Dutch humanist Dirck Volckertsz. Coornhert with precise line work.

This engraving by Jan Harmensz. Muller depicts the Dutch humanist, theologian, and poet Dirck Volckertsz. Coornhert. Produced around 1590, the work captures the subject in his later years, as indicated by the inscription 'Aetat: suae 68' in the upper right corner. Muller, a skilled engraver from Amsterdam, employs a rigorous technique of cross-hatching and varied line weights to model the facial features, beard, and the texture of the hat. The portrait is presented in a bust format, focusing the viewer's attention on the sitter's weathered expression and direct gaze.

Below the portrait, a Latin inscription identifies the subject as 'Theodorus Coornhertius Amstelredamus' and includes a laudatory verse. This text serves to contextualise Coornhert within the intellectual climate of the late sixteenth-century Netherlands. The engraving reflects the technical precision characteristic of the period, where the engraver's control over the burin allowed for a high degree of tonal variation and anatomical detail. The background consists of fine, horizontal parallel lines, which provide a neutral field that pushes the figure forward, creating a sense of presence without the need for complex spatial depth.

Jan Harmensz. Muller was a central figure in the Haarlem school of printmaking. His work often demonstrates the influence of Hendrick Goltzius, particularly in the fluid handling of the line and the dramatic use of light and shadow. This portrait is a clear example of the formal, commemorative style of printmaking that was common for documenting the likenesses of scholars and public figures of the era. The print remains a significant record of Coornhert, who was a controversial and influential thinker known for his advocacy of religious tolerance and his contributions to the Dutch language.