signed in pencil and stamped Hauptstrom (on an adhesive label under the rails), this work is a unique variation from an edition of 12, signed in pencil, this work is the artist's proof number 2 from an edition of 45 plus 8 artist's proofs, this work is the master copy of the film, signed and numbered 12/60 in pencil, this work is number 12 from an edition of 60, this work is from an edition of 1100, this work is from an edition of 45 plus IX plus 5 artist's proofs, signé au crayon et estampillé Hauptstrom (sur une étiquette adhésive sous les rails), signé au crayon, signé et numéroté 12/60 au crayon
