cover 1862 (6 June) mourning envelope with original enclosure, the envelope, which is endorsed "By Royal Messenger" and "Crown Princess of Prussia", is addressed to Lady Scott at 57 Eaton Square and affixed with 1d. stars on arrival in London (cancelled 9 June), the letter is headed "Irene(?) Palais, near Potsdam" and refers to "The Princess is looking for a good English second nurse", the reverse of the envelope shows a spectacular and intact black wax Royal seal; fine and most unusual