The image shows a portrait of a man depicted from the waist upwards. He is positioned facing slightly to his left, with his left hand visible, holding a book. The man's facial features are quite detailed, showing an older face with pronounced cheekbones and a solemn expression. His hair appears to be receding and is covered by a distinct headpiece with a pointed top. He is dressed in a voluminous cloak that is folded around his shoulders. The background is a simple, patterned texture with a small coat of arms in the upper right corner that includes the phrase "Soli Deo Gloria." The text below the portrait reads "GVILIELMVS ESTIVS."