邮资凭证和丰富集邮收藏的作用。但是,这类异形邮票和其它邮票相比较,除了形状不同外,究竟还有什么不同?还有哪些特征?本文试作肤浅分析。富于变化的观赏性综观世界各国所发行的异形邮票,虽然大多仍为规则的几何图形,但它却富于变化,多姿多彩,使邮票园地分外灿烂。这类邮票外形有正方形、平行四边形、菱形、梯形、三角形、五角形、六角形、八角形、圆形、椭圆形、十字形、多边形等等。此外,还有不少是无章可循的 Postage vouchers and the role of enrichment stamp collection. However, what are the differences between these types of shaped stamps and other stamps in addition to their shapes? What are the other characteristics? Variety of ornamental Variety All over the world issued by the profile of stamps, although most of the rules are still geometric figures, but it is full of changes, colorful, so exceptionally bright stamp garden. Such stamps have the shape of a square, parallelogram, diamond, trapezoid, triangle, pentagon, hexagon, octagon, circle, oval, cross, polygon and so on. In addition, there are many are out of order