众所周知,邮票有印刷量、发行量、需求量、消耗量、销毁量、沉淀量和存世量等数量之分别,它们都是影响邮票收藏价值的因素。笔者以为,影响邮票收藏价值的根本因素首先取决于存世量,其次取决于需求量和沉淀量(这里所说的需求指的是集邮需求,沉淀指 As we all know, stamps print, circulation, demand, consumption, destruction, sedimentation and survival of the number of the number of differences, they are all factors that affect the value of stamp collection. The author believes that the fundamental factors that affect the value of the collection of stamps depend first of all on the depositary amount, and secondly on the amount of demand and the amount of sedimentation (the demand mentioned here refers to the philatelic demand,