Otto Dix Gera-Untermhaus 1891 – 1969 Singen Portrait J.B. Neumann 1922 Pencil on heavy paper On the reverse a fragment of a label from Galerie Nierendorf, Neue Kunst, Cologne. On the back of the mat a label of Nierendorf Gallery, New York Minor time staining Private collection, USA (acquired at Nierendorf Gallery, New York) 51 x 41,1 cm 20 1/8 x 16 1/8 in. Portrait J.B. Neumann 1922 Bleistift auf festem Papier 51 x 41,1 cm 20 1/8 x 16 1/8 in.