DPO 2 DPO Cover 1905 Essex Street Stat Winthrop Stat Flag Cancel

This 1905 postal cover from Boston to Winthrop features an Essex Street Station Flag Cancel, and a Winthrop Station postal mark on the reverse. Both are DPOs! The Essex Street Station was only in use from 1903 to 1921. The Winthrop Station cancel was in service 1873 to 1908. Both are collected as a Dead or Discontinued Post Office. The stamp is Scott #319, Die 1. Cover is slightly dog eared but overall very good condition. It will be shipped via first class mail letter with card stock.