roman numbered and signed by the artist 'DIX'. Preface by Hans Koch; completely signed by the artist 'DIX' in pencil on l.r., in the center inscribed with 'I' for first sheet of series and numbered '50' on left; completely signed by the artist 'DIX' in pencil on l.r., in the center inscribed with 'II' for second sheet of series and numbered to the left 50 (2); completely signed by the artist 'DIX' in pencil on l.r., in the center inscribed with 'III' for third sheet of series and numbered to the left 50 (3); completely signed by the artist 'DIX' in pencil on l.r., in the center inscribed with 'IV' for fourth sheet of series and numbered to the left 50 (4); completely signed by the artist 'DIX' in pencil on l.r., in the center inscribed with 'V' for fifth sheet of series and numbered to the left 50, the numbering over the erased inscription 'Probedruck' by the artist (5); completely signed by the artist 'DIX' in pencil on l.r., in the center inscribed with 'VI' for sixth sheet of series and numbered to the left 50, the numbering over the erased inscription 'Probedruck' by the artist (6)