18 posters (of the 21-part series), offsets on thin paper. + a supplement of 40 doublets of the series (each in several copies of one image, from a total of 15 images)
18 posters (of the 21-part series), offsets on thin paper. + a supplement of 40 doublets of the series (each in several copies of one image, from a total of 15 images)