1 lep./3 lep. x5 1917 "Κ.Π." surcharges on Flying Mercury stamps. Surcharge inverted, surcharge double, surcharge double one inverted, triple surcharge and "Κ.Μ.". The Hel. C6c+C6d hinged, the rest u/m. (Hellas C6a, C6b, C6c, C6d, C6II)