The image depicts the upper body of a man wearing ornate armor, shown in a three-quarter view facing right. He has short, curly hair and a neatly trimmed beard and mustache. The armor is elaborate with decorative patterns, including a chest plate, arm guards, and a sash or belt across his torso. In his right hand, he holds a baton or rod, and a helmet with a plume is beside him. The background has horizontal lines creating a patterned effect, and the image is framed with a decorative border. The text "Franciscus Dux a Guisia" is inscribed below the image.