This is a poster stamp from the German series called ‘Welt in Waffen’, or World at Arms. This is number 11 of a series of 12 stamps, and shows examples of troop branches in the Serbian army, specifically cavalry, artillery officer, and cavalry. The first 10 stamps in the series featured soldiers from Germany, Austro-Hungary, Italy, America, Russia, England, France, Turkey, Greece, and Bulgaria. The twelfth stamp featured the Montenegrin army. || Poster stamp.

A poster for The Tonics Concert Party of the 76th Infantry Brigade

Pair of poster stamps || This is a pair of Italian-made poster stamps from the ‘Marche Nazionaliste’, nationalist stamps, series. Both are from volume 18 of the series and number 6 shows Serbian Prince Regent Alexander, and number 14 shows an image of a Serbian soldier carrying a rifle. Both stamps were produced in October 1915. Serbia and Italy were allies and this period was a particularly difficult one for Serbia as it was facing invasion on several fronts.