one page, folio, integral blank. " /> CATHERINE II (1729-1796), <I>Empress of Russia</I> ["Catherine the Great"]. Letter signed ('Ekaterina') to [Freidrich Karl Joseph von Erthal], Archbishop and Prince-Elector of Mainz, 12 October 1793, in Russian, announcing the marriage of her son, the future Alexander I, to Louise of Baden, <I>one page, folio</I>, integral blank. | Christie's