India ink on paper, signed and dated in graphite lower right. Beautiful original work, made by the painter at the age of 20, delivered with a certificate of authenticity. Dimensions with frame : 23 x 24 cm, approximately. Size of the work : 11,8 x 13 cm. We offer here a moving work, done by Cornelius in Amsterdam, when the city was in turmoil with the Nazi invasion. Regularly working together, Corneille and Karel Appel continue to work, it is a period when both painters find in Picasso, his blue period and his cubist period, his Guernica, a particular resonance. Guillaume Corneille (1922-2010) was born in Liège of Dutch parents and was one of the members of the Cobra group along with Constant, Dotremont, Karel Appel, Asger Jorn, Noiret, Doucet, and Alechinsky.