Grand Duke of Tuscany 1765-1790, King of Hungary, Croatia, and Bohemia, King in Germany, and Holy Roman Emperor 1790-1792 (1747-1792)
Blazon: Per quarterly, I per pale i barry of eight gules and argent (Hungary ancien), ii gules a cross patriarchal pate issuant from a crown upon three mounts in base all proper (Hungary moderne); II gules a lion rampant double-queued argent, armed, langued, and crowned or (Bohemia moderne); III bendy of six or and azure within a bordure gules; IV azure crusilly and two fish haurient addorsed or; overall in the fess point an escutcheon tierced per pale, i or on a bend gules three alerions argent (Lorraine), ii gules a fess argent (Austria), iii or five torteaux in orle, in chief a roundel of France (Medici)