(i), (ii) and (iii): signed, numbered 1/2 and inscribed HPM; signed, numbered 1/2 and inscribed HPM on the reverse, (iv): signed, numbered 2/2 and inscribed HPM; signed, numbered 2/2 and inscribed HPM on the reverse, (i), (ii) and (iii) were executed in 2011 and are number 1 from an edition of 2, and (iv) was executed in 2012 and is number 2 from an edition of 2
