From Military Post Office to Baarle-Hertog in 1918

This cover was sent from the ambulant post office in the Belgian Army (Postes Militaires - Legerposterij) on 31 July 1918 and arrived at its destination in Baarle-Hertog on 27 August 1918.

Characteristics: Only 2 cents in total franking! Military censure (Number 21) O.F. circular cancel Cancel of arrival on reverse side Vertical fold not affecting stamps
Estimated value: $90 [Purchase price in September 2003]