1939年澳门大葡帝国航空邮票50仙,加盖「纽约世界博览会」一全,只印行2000枚,限在博览会内出售,极罕品,上中品。敬请务必预览。 1939 Macau Imperial Colonial Portugues air post stamp 50a, ovpt 1940 New York World Fair, New, only 2000pcs printed and sold only at New York Fair, VF. Extremely rare. Viewing recommended