The Kionga Triangle was a tiny territory on the border between German East Africa

German East Africa

German East Africa was a German colony in East Africa, which included what are now :Burundi, :Rwanda and Tanganyika . Its area was , nearly three times the size of Germany today....

 (present-day United Republic of Tanzania

Tanzania

The United Republic of Tanzania is a country in East Africa bordered by Kenya and Uganda to the north, Rwanda, Burundi, and the Democratic Republic of the Congo to the west, and Zambia, Malawi, and Mozambique to the south. The country's eastern borders lie on the Indian Ocean.Tanzania is a state...

) and the Portuguese

Portugal

Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 colony

Colony

In politics and history, a colony is a territory under the immediate political control of a state. For colonies in antiquity, city-states would often found their own colonies. Some colonies were historically countries, while others were territories without definite statehood from their inception....

 of Mozambique

Mozambique

Mozambique, officially the Republic of Mozambique , is a country in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west and Swaziland and South Africa to the southwest...

 (present day Republic of Mozambique), originally German, but occupied by Portuguese forces in 1916.

On May 29, 1916, 100-reis postage stamp

Postage stamp

A postage stamp is a small piece of paper that is purchased and displayed on an item of mail as evidence of payment of postage. Typically, stamps are made from special paper, with a national designation and denomination on the face, and a gum adhesive on the reverse side...

s from Lourenço Marques

Maputo

Maputo, also known as Lourenço Marques, is the capital and largest city of Mozambique. It is known as the City of Acacias in reference to acacia trees commonly found along its avenues and the Pearl of the Indian Ocean. It was famous for the inscription "This is Portugal" on the walkway of its...

 were overprint

Overprint

An overprint is an additional layer of text or graphics added to the face of a postage stamp or banknote after it has been printed. Post offices most often use overprints for internal administrative purposes such as accounting but they are also employed in public mail...

ed with "KIONGA" and one of the denominations ½c, 1c, 2½c, and 5c. These were the only stamps issued for Kionga. In 2002, the Scott Catalogue

Scott catalogue

The Scott catalogue of postage stamps, published by Scott Publishing Co, a subsidiary of Amos Press, is updated annually and lists all the stamps of the entire world which its editors recognize as issued for postal purposes. It is published in six large volumes and is also produced in...

 listed the average purchase price of a high-quality set as over US$

United States dollar

The United States dollar , also referred to as the American dollar, is the official currency of the United States of America. It is divided into 100 smaller units called cents or pennies....

70.