Henry of Luxembourg and another man

Sir Peter Paul Rubens (Siegen 1577-1640 Antwerp) Henry of Luxembourg and another man inscribed by Rubens 'Henricus Luxemburgensis' and further notes in Flemish on the color and materials of the costumes pen and brown ink, on grey paper 4 3/8 x 8 3/8 in. (11.3 x 21.2 cm.), irregular