1890 Registered envelope to Constantinople franked on reverse by Empire 1pi + 2pi tied by all-Arabic triple framed "KIRKUK" (CW Type 61), intact seals alongside, fine and very scarce. (Image)

1918 Registered envelope franked 1916 10pa (4) + 1917 50pa pair cancelled all Arabic "MOSUL / 5", 10pa with some perf. issues where overlapping. Illustrated in Isfila handbook with rare registration label (only known from 4 covers and 1 front). (Image)

1926 (May 10) envelope sent registered "By overland mail / Baghdad Jerusalem" with 1923-25 1/2a, 1a, 1 1/2a, 3a, 4a and 8a tied by Baghdad registered double circles, reverse with London, Berlin-Breslau and Cottbus ds, very fine cover going via the Southern route, thought to be the only known registered cover from this route. (Image)