Valdivia Provisional

In 1898, Germany launched the Deutsche Tiefsee-Expedition to conduct oceanographic and biological studies off of Antarctica and in the Indian Ocean.  The Expedition’s ship, the steamer Valdivia, arrived in Kamerun in late September 1898, and departed in early October. 

Due to the unusual volume of mail being sent by the members of the Expedition, the post office at Kamerun ran short of 10 Pf stamps.  To remedy the shortage, the postmaster bisected 20 Pf stamps for use as 10 Pf provisionals. The total number of stamps bisected is unknown, but is believed to be approximately 100.  All legitimate uses are canceled on 3 October 1898.