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邮票自诞生以来,世界各国所发行的邮票,其形状绝大多数为矩形。随着时间的推移,有些国家开始发行一些其它形状的邮票,统称为异形邮票,诸如三角形、五边形、六边形、菱形、圆形以及水果形、钻石形等。我国也曾发行一些异形邮票,但数量较少,如1951年发行第一套《保卫世界和平》等腰三角形邮票之后,直到2000年才发行第二套异形邮票——《中国神舟飞船首飞成功纪念》等边三角形邮票,两套邮票之间相隔50年的时间。异形邮票的印制工艺比普通邮票复杂,制作成本也较高,因此发行的数量较少,其艺术价值和欣赏价值也比普通邮票高。随着我国邮票印
Since the birth of the stamps, the stamps issued by various countries in the world have mostly rectangular shapes. Over time, some countries started to issue stamps of other shapes, collectively referred to as shaped stamps such as triangles, pentagons, hexagons, rhombuses, circles and fruit shapes, diamond shapes and the like. Our country has also issued some special-shaped stamps, but in relatively small quantities, such as the issuance of the isosceles triangular stamps in 1951, the first of which was launched in 1951, and the second set of special stamps was not issued until 2000 - “the first successful flight of China’s Shenzhou spacecraft Commemorative ”equilateral triangular stamps, two sets of stamps separated by 50 years time. The printing process of special-shaped stamps is more complicated than ordinary stamps, and the production cost is also relatively high. Therefore, the quantity of stamps issued is relatively small, and its art value and appreciation value are also higher than ordinary stamps. With our stamp printed in China