Inscription: The photograph is inscribed in pencil on the recto of the mount, beneath lower left of sheet: "Threshold". The photograph is inscribed in white letters at bottom of image: "ZERO". The photograph is inscribed in black on the backboard: "To Alexandra, Thanks / for interest in this / work, hope you will / enjoy./ (signature)".

The photograph is signed in pencil, on the recto of the mat beneath the lower right of the sheet and in black on the verso of the backboard following a note to the donor: "Geoffrey Brune 1988".