Sweden. Courier mail. HEDVIG ELEONORA (1636–1660–1715). Queen of Sweden 1656– and regent during the minority of Karl XI 1660–1672. Letter dated May 20, 1666 to her with 10 rows of titles and nice ornaments. From and signed by Sophie Agnes of Mecklenburg (1625-1694). Sophie become Abbess of Rühn 1654. Long full content in a mix of languages. The letter has been climate affected otherwise good quality. Scarce item!