risny - I'm hardly a expert, I'm afraid, but ... The first stamps of the liberation period were issued by the French Committee of National Liberation. This set of five (not to hand at present) was put on sale in Corsica in 1943, and thereafter in southern France as the liberation progressed. From November 1944, they were on sale throughout France and in some Colonies.
In 1944, with the allied landings, more ranges of stamps to replace the issues of the Vichy French State arrived. Those you have were issued on 9 October 1944. They were supposedly prepared on Roosevelt's instruction, designed by WA Roach, engraved by CA Brooks, AW Chistensen, T Wall and JS EDmondson, and printed by lithography by the Bureau of Engraving and Printing in Washington, DC.

On 15 November 1944, a further series of stamps appeared, lithographed by Imbert in Algiers and designed by Henry Razous (cockerel) and Louis Fernez (Marianne).

On 12 February 1945, a second set of the US-printed stamps, this time with black numerals, was issued. By this time, stamps using previous and new designs were also being produced in France.


During 1944-45,a series of stamps recess-printed in London by De La Rue was issued. These featured Edmond Dulac's design and engraving of Marianne, arrived at after what appear to have been a number of personal interventions by de Gaulle. The precise date of issue is uncertain - Maury suggests that the stamps may first have appeared on 17 May 1944.


In addition, a range of earlier issues was overprinted during the liberation period. Some of these are of doubtful legitimacy.
Bonne chance!