Obock 1910: Registered cover to Dire-Daoua franked by 1892 75 c. violet on yellow tied by 'Djibouti / Cote Francaises des Somalis' cds (May 28) and reverse with 'Dire-Daoua' arrival cds (May 31) in black. Cover bend away from the adhesive but a scarce correctly rated commercial usage. (Image 1) (Image 2) (Image)