 For instance, in 1985 there were 10 issues, of which three were single commemoratives, five were sets of four, and the remaining two were sets of six.The Kionga Triangle was a tiny territory on the border between German East Africa (present-day Tanzania) and Portuguese Mozambique occupied by the Portuguese forces in 1916.On May 29, 1916, stamps from Lourenço Marques were overprinted "KIONGA".