From Charleroi to Brussels in 1919

This card was sent from Charleroi to Brussels in 1919. The fortune cancel does not specify either the day or the month, but the fact that a fortune cancel was used suggests that the card was sent in early 1919, not long after the end of the war.
With no specific date, no name of addressee and a blank form on the reverse, this card is quite a mystery.

Characteristics: 1c+1c and twice 2c+2c Total franking = 5c (exact franking) Adresee's name deleted Undated, fortune cancel Unused reverse side
Estimated value: $55 [Auctioned on delcampe.com in January 2004] [Private sale in September 2004]