Vimy Ridge stamp and first day cover, issued by France:
Commemorative first day cover of the France 75c issue unveiling the Vimy Monument on 26 July 1936.
On 11 September 1929, France introduced a special concessionary letter rate to Canada,
75c on the first 20g and 50c for each additional 20g. This rate was in effect until 31 July 1937.
The rate for letters to other UPU countries was 1.50F per 15g. [1]