Isaac de Jouderville here adopts the tronie format pioneered by his master Rembrandt, and shows a figure wearing a silk scarf and a beret. The bushy hair and cleft chin point to Rembrandt himself as the sitter, an imaginative inversion of the master-student hierarchy. Unlike his master, however, Jouderville employs the grisaille technique of painting his subject in shades of grey. It may be that Jouderville anticipated adding colour over these blocked-in forms, or that he was innovating upon Rembrandt’s example.