(1893 Chicago World's Fair) Committee for the Exhibition of Italian Iaces, at the World's Fair - Chicago, imprint on cover to Princess Pignatelli Strongoli in Naples, Italy, franked with 5¢ Columbian tied by "Chicago, Ill., Dec 12" duplex postmark, Very Fine, a rare World's Fair imprint cover, IACES is the International Association of Civil Engineering. Estimate  $150 - 200. $0 (Image)