Chiaroscuro woodcut of Charles the Bald, Holy Roman Emperor, and Louis the Stammerer, King of West Francia. Head and shoulder length portraits in brown and black ink that has been heightened by the natural colour of the paper. Charles wears a crown and draped mantle while carrying a shield and drawn sword. Louis wears a crown and pleated collar. A Latin inscription within the circular frame reads 'CAROLVS II. CALVUUS ET HLVDOVICVS III. BAL. AVGG.'. The print comes from Icones Imperatorum Romanorum; this fifth and final volume, published in 1645, added to a four volume series which posthumously published the work of Hubert Goltzius (1526-1583). The fifth volume contained 160 biographies of emperors, each illustrated with a chiaroscuro woodcut by Christoffel Jegher (1596-1652/3), (British Museum, shelfmark 209*.a.3). The print has been trimmed.