Anna Catharina Constantia Vasa, signed document

ANNA CATHARINA CONSTANTIA VASA (1619-1651). Daughter of Sigismund III, king of Poland (Swedish king 1592-99), married Philipp Wilhelm von Wittelsbach.Document signed, dated Cologne (Köln) September 30, 1651. 1 page in folio. Adress and seal. Folded, some spotting and rust from metal clip, blue owner's stamp of Börje Israelsson on blank verso.