From Liège to Peterborough in 1919

This postcard was sent from Liège on 14 July 1919 to Peterborough (in England). The picture depicts the main rail station in Liège as it looked at the time. The message talks about exchanging cards with different stamps, hinting that this may be a philatelic item.

Characteristics: Red Cross 2c+2c plus 1c, 2c and 5c definitives of 1915 Total franking of 10c (exact franking?) Foreign destination, but not exotic No cancel of arrival
Estimated value: $25 [Auctioned by Olivier Simons in June 2005]