Autograph Wrapper Front only, signed “G.P.R.” as Prince Regent, addressed by him to Her Royal Highness The Princess Mary, Windsor Castle. 3 x 5 inches, in good condition, mounted on part of an old album page, alongside a good example of the Royal Seal in red wax, with the monogram G.P.R. beneath a Crown. Undated. King George IV (reigned 1820-1830).