Folded parcel paper to make up for a letter on official matter from St. Thomas 11 October 1916 to General Office for the Postal Service in Copenhagen, noted on front ' Postanliggende ' (postal matters), and registration mark 'ST. THOMAS / R / 10544' and on reverse paper seal 'ST. THOMAS KGL. POSTKONTOR D.V.I.'. Being an official letter sent free of charge, such letters are almost non existent.