Kortrijk to Saint-Servais (Namur) in 1920

This express cover was sent from Kortrijk on 7 August 1920 to Saint-Servais next to Namur, barely a week before all its three stamps were taken off circulation.
The stationery of this cover, to benefit wounded soldiers' homes, is identical to several other ones: one cover sent from Saint-Servais to Kortrijk on 7 January 1920, another sent from Saint-Servais to Kortrijk on 19 May 1920, another sent from Saint-Servais to Kortrijk on 2 August 1920, and another sent from Kortrijk to Namur on 13 April 1920.

Characteristics: Featuring the 50c+50c stamp and two Red Cross stamps of 1915 Total franking of 65c (exact postage?) Express cover Cancel of arrival (?) [scan of back not available]
Estimated value: $55