Richard Paul Lohse "PROGRESSION VON VIER GLEICHEN GRUPPEN" Signed, titled and dated in felt-tip pen (faded) on the upper stretcher: Richard P. Lohse Zurich Progression von vier gleichen Gruppen 1956/65/6 1956/1965/66 Oil on canvas 119,5 x 119,5 cm Private collection, Rhineland Richard Paul Lohse. Hanover, Kunstverein Hannover, 1971, cat. no. 75 On the stretcher a label of Kunstverein Hanover (see below) 119,5 x 119,5 cm