Hela army postal service admission stamp in of the scarce c-color unused, expertized Pickenpack and certificate with photograph Gabisch BPP (for former pair) : "13c - gray blue, unused without gum (as issued), is genuine. The printing is very pale and resulted on the front- and rear this curve. The paper is blotched and some discolored. To recent knowledges comes these stamps from waste inventories. " the c-color is very rare!