1930 Paper, charcoal, watercolor, pencil. 44.5 x 22.2 cm.
At the bottom right, the author’s signature in Cyrillic script "I. Shtenberg". On the reverse, the author’s inscription in Cyrillic pen "1930 / Blue Negro / I. Stenberg" and a paper sticker with the inscription "№2". On the back there are traces of glue along the edges of the sheet. A sheet of tracing paper is glued to the sheet on the back side. The bottom left corner is slightly jammed.