inscribed in blue ballpoint pen on support reverse c.r.: 85. inscribed in blue ballpoint pen on support reverse c.: 1960 inscribed (diagonally) in pencil on support reverse c.: by Athol Shmith. inscribed in blue fibre-tipped pen on support reverse c.: Grey. / 20/24 / W/M inscribed in red fibre-tipped pen on support reverse l.c.: 66.
