Holy Roman Emperor (1741–1790) from 1765 until his death and ruler of the Habsburg lands. LS in German, signed “Joseph,” as Holy Roman Emperor, one page both sides, 8.5 x 13.5, November 17, 1788. Untranslated letter to Erthal, the Archbishop of Mainz. Integral leaf addressed to Friedrich Karl Joseph von Erthal, Prince-Elector and Archbishop of Mainz. In fine condition, with intersecting folds, some light creases, and a few trivial spots. RR Auction COA.
