Coats of arms of the Holy Roman Empire

Over its long history, the Holy Roman Empire used many different heraldic forms, representing its numerous internal divisions. == Imperial coat of arms == === Coats of arms of Holy Roman Emperors === The Reichsadler ("Imperial Eagle") was the heraldic eagle, derived from the Roman eagle standard, used by the Holy Roman Emperors and in modern coats of arms of Germany, including those of the Second German Empire (1871–1918), the Weimar Republic (1919–1933) and the "Third Reich" (Nazi Germany, 1933–1945).

Source: Wikipedia — Coats of arms of the Holy Roman Empire (CC BY-SA 4.0)