(a) inscribed (diagonally) in blue paint u.l.: Hard Rain (b) inscribed in fibre-tipped pen on reverse u.c. (upward arrow) inscribed in fibre-tipped pen on reverse l.c.: Hard Rain. / (Upper left) POC (c) inscribed in fibre-tipped pen on reverse u.l.: (upward arrow) inscribed in fibre-tipped pen on reverse c.: 'Hard Rain' / POC POC / (lower right)
