價格：免費
更新日期：2019-02-21
檔案大小：3.8M
目前版本：2.0
版本需求：Android 4.1 以上版本
官方網站：mailto:mallon80@gmail.com
An up-to-date price guide and helpful list of the first one thousand United States stamps. Helpful in determining the value of an individual item or your entire collection. Links to stamp expertizers and dealers in your area. Lots of useful information about the stamps dating from 1847 to 1951.
