This is the East African Airways airmail labels used by 3 African countries; Kenya, Tanzania and Uganda in the 70s. The label printed with the airline lion logo with tagline "The Safari Airline".
I obtained this labels from Uganda post office. The strip of five labels are in mint condition. The printing format is unique as two labels are printed upside down to form a strip of orange and light blue. I am eager to look for the full sheet of this labels. If you have, do let me know. I can do a trade. Wikipedia have a brief write up on EAA:
"East African Airways Corp. (EAA) was an airline jointly run by three countries in East Africa: Kenya, Tanzania; and Uganda, which were then part of an East African Community. The airline was headquartered in the Sadler House in Nairobi, Kenya. When this was dissolved in 1977, each country established its own national airline: Kenya Airways, Uganda Airlines; and Air Tanzania."
You can view the pictures of EAA´s aircraft from bygone days at: