Prior to their issue, however, the German freighter Marie broke the blockade, bringing a fresh supply of Yacht Issues. The provisional issues were therefore not used. Shortly thereafter, to prevent their capture by the British, the stamps were buried on a plantation near Morogoro.
In August 1921, the Allies permitted the Germans to return to the scene and recover the stamps. Due to the burial and the humidity, the stamps were in poor condition, and many had to be destroyed. The remainder were auctioned in Germany.
Total numbers are as follows: