Here is a stamp which I have now owned for around 2 years. After some research I have found out a bit more about it. It is a French stamp, typical to to the style of the "Post-War Roaring 20s", issued to commemorate the 1925 "Exposition Internationale Des Arts Decoratifs Modernes" World's Fair. Apparently the term "Art Deco" actually comes from shortening the words "Arts Decoratifs" therefore this stamp helped to spread the "Art Deco" movement throughout the World.
1925 Exposition Internationale des Arts Decoratifs Poster