70 Groschen blue-violet on blue-grey with overprint \"19. IX. 1941 / KNIB\", special edition battle about kiev, issue of the Ukrainian aid committees in Chom for the internal offical postal service - whose use but from the German occupants authorities interdictively became, unused without gum - as issued, expertized Zirath BPP and photo expertize Robert Brunel VP (2023) : \"the condition is perfect. \", rarely offered!