coloured pencil on paper collage on squared paper

signed, titled and dated '5 x 4 x 3 x 2 x 1 Alighiero Boetti 1970' lower left

collage element 31.4 x 26.8 cm (12 3/8 x 10 1/2 in.)
sheet 48.2 x 66 cm (18 7/8 x 25 7/8 in.)

Executed in 1970.