Printed 'On Her Majesty's Service Tanganyika' OFFICIAL cover franked with 1959 10c carmine red, 30c black & deep ultramarine and 50c reddish purple 'OFFICIAL' overprint issue (SG O2 & O5/O6) tied by TANGA cds's dated 15 JY 1960 with printed blue on white 'TANGA TANGANYIKA' registration label alongside and 'PROVINCIAL TREASURY ACCOUNTANT TANGA' official handstamp in purple on reverse. Addressed locally within TANGA. A scarce issue used on cover.