1919 cover to Korogwe with a single and pair of 5c cancelled by improvised violet cork ‘N.G.O.’ cancels. A further 5c has been added on arrival, either as a postage due or forwarding charge. This has been cancelled KOROGWE 14 JY 19. The ‘N.G.O’ cancels are probably from NGOMBEZI, a village to the west of Korogwe that until 1931 did not have a canceller. A remarkable cove, the only known one with these ‘N.G.O.’ cancels.