Manuscripts, Sweden. KARL XIII (1748–1809–1818). Regent of Sweden during the minority of Gustaf IV Adolf 1792–1796. He was the younger brother of Gustaf III. Letter to Colonel N F Jernfeltz in Norrköping. Easy to read. Dated at Stockholm Castle April 18, 1793, signed Carl and his royal seal in black on back (due to King Gustaf III's death = mourning letter). Scarce item in good quality but some paper separation.