Åland Islands Post Road flag (original) (raw)

The flag represents Postvägen: the Post Road, rather than a post office.
"The third mark showing you are traveling along the old Post Road are the Flags of the Post Road, which fly on harbours, boats and tourist information offices."
Carlos Th, 14 May 2003

And a correct translation. Carlos is right that the photo does not show the flag of the Åland postal service, or Åland Post which is the official name in English. It is a flag marking a historical post route.
Jan Oskar Engene, 15 May 2003