1940s a gourp of 5 USTP Sea Post covers, f.w. SYS and Martyrs issues, applied with SS President, Taft duplex d.s. as well as President
1940s a gourp of 5 USTP Sea Post covers, f.w. SYS and Martyrs issues, applied with SS President, Taft duplex d.s. as well as President Grant horizontal cachcet etc. In 1922 and 1924, Admiral Oriental Line and Dollar Line began US Sea Port Service between Seattle / San Francisco and Manila. Vessels of both these lines were named after the presidents of USA1940年代一組五件美國跨太平洋航線海郵封，貼孫像及烈士票，鈐President Coolidge、President Taft雙聯日戳及President Grant橫戳等。在1922及1924年，Admiral Oriental Line及Dollar Line提供往來西雅圖 / 三藩市與馬尼拉的航線。兩家公司的船隻均以美國歷任總統命名。
