1917 "Κ.Π." surcharges on Fl. Mercury stamps, complete set of 9 values plus colour shades and perforation varieties. C9B+C9C+C11A stamps, with trace of hinge, the rest u/m. 20 stamps in total. (Hellas C5 + C6 + C6A + C6B + C7 + C8 + C9 + C9A + C9B + C9C + C9D + C10 + C11a + C11c + C11d + C11f + C11A + C12 + C12A + C13).