inscribed in black chalk on reverse u.l.: 5 (in a circle) inscribed in black chalk on reverse u.c.l.: 4 (in a circle) / K (…illeg.) / 22/5/2012 inscribed in black chalk on reverse u.c.: 3 (in a circle) inscribed in black chalk on reverse u.c.r.: 2 (in a circle) inscribed in black chalk on reverse u.r.: 1 (in a circle)
