Flag of Germany 3:5 figure. In 1804, Napoleon Bonaparte declared the First French Empire. In response to this, Holy Roman Emperor Francis II of the Habsburg dynasty declared his personal domain to be the Austrian Empire and became Francis I of Austria. Taking the colours of the banner of the Holy Roman Emperor, the flag of the Austrian Empire was black and gold. Francis II was the last Holy Roman Emperor, with Napoleon forcing the empire's dissolution in 1806. After this point, these colours continued to be used as the flag of Austria until 1918. The colours red and white were also significant
Flag of Austria in the reign of Emperor Joseph II, the Austrian, later Austro-Hungarian Navy used a naval ensign ("Marineflagge") based on the red-white-red colours, and augmented with a shield of similar colours. Both of these flags became obsolete with Austria-Hungary's dissolution in 1918, and the newly formed rump state of German Austria adopted the red-white-red triband as its national flag. The Austrian flag has been the main motif of many collector coins. One of the most recent examples is the 20 euro Post War Period coin, issued by the Republic of Austria on 17 September 2003. The obverse of this coin shows