Italy 1917, The world's first airmail stamp, Italy Scott C1, was created by overprinting "ESPERIMENTO POSTA AEREA MAGGIO 1917 TORINO-ROMA · ROMA-TORINO" on the 25-centesimo rose-red King Victor Emmanuel III special delivery stamp. The plane, an Italian Air Force Pomilio PC-1 reconnaissance aircraft, carried 480 pounds of mail, mostly specially prepared commemorative cards and 200 newspapers. Most of the mail was postmarked May 20, 1917