envelope registered from Nairobi to London, transit d.s. on reverse. S.G. 57" /> cover 1912-21 5r. blue and dull purple, a marginal example from the top of the sheet, neatly cancelled and affixed on 1917 (Nov.)<I> "Ewens"</I> envelope registered from Nairobi to London, transit d.s. on reverse. S.G. 57 | Christie's