Reichsadler

Attributed arms of Otto IV, Holy Roman Emperor (Chronica Majora, 1250)
Einköpfiger Reichsadler ("Imperial Eagle") monocephalous/single-headed variant in the style of c. 1300
Einköpfiger Reichsadler monocephalous/single-headed variant, in the style of c. 1400
Nimbierter Doppelköpfiger Reichsadler bicephalous/double-headed variant with halos in the style of c. 1480
Nimbierter Doppelköpfiger Reichsadler bicephalous/double headed variant with halos in a classic style
Doppelköpfiger Reichsadler, arms of the German Confederation, 1865
Reichswappen, arms of the German Reich/Weimar Republic (1919–1935)
Reichsadler Deutsches Reich (1935–1945) alternative version.svg, which I choose not to depict
Bundesadler ("Federal Eagle"), as used by Weimar Republic, adopted by the Federal Republic of Germany in 1950

The coats of arms of the German Empire (1871–1918).

The lesser arms of the German Emperor.	The coat of arms of the German Emperor with crest: Imperial coat of arms of His Majesty. 27 April 1871–3 August 1871	The greater coat of arms of the German Emperor: Imperial coat of arms of His Majesty.	Middle coat of arms of the German Emperor.	Provisional arms of the German Empire at the Proclamation of Versailles.	The coat of arms of the German Empire, 1871–1889. 3 August 1871 – 1888	The coat of arms of the German Empire, 1889–1918. 6 December 1888 – 1918