一、金属邮票 1955年,匈牙利为纪念本国制铝工业创建25周年和国际轻金属产业会议的召开,发行了一种铝箔航空邮票。这是世界上最早的金属邮票。图案为一架飞机正在飞越烟卤林立的冶金工业区上空,印在厚度只有0.009毫米的铝箔上,背面裱有一层薄纸,刷有背胶,可与普通纸质邮票一 First, the metal stamp In 1955, Hungary to commemorate the 25th anniversary of the founding of the aluminum industry and the convening of the International Light Metal Industry Conference, issued a foil air stamps. This is the oldest metal stamp in the world. The motif is that an airplane is flying over the metallurgical industrial zone where smoke and smoke are flying. It is printed on aluminum foil with a thickness of only 0.009 mm. A thin layer of tissue paper is mounted on the back of the aircraft.