inscribed in fibre-tipped pen (in image) u.l.: 1 2 3 4 5 6 inscribed in fibre-tipped pen (in image) (vertically) u.r.: 2 3 4 5 6 7 inscribed in fibre-tipped pen (in image) l.l.: 1 2 3 4 5 6 inscribed in fibre-tipped pen (in image) (vertically) u.l.: 2 3 4 5 6 7 (numbers identify squares ruled up in pencil across print in preparation for transferring image to another medium)
