The Free Sate of Coburg continued the using of the flag of Saxony-Coburg-Gotha.
Source: Volker Preuß
Area: 217 square miles
Inhabitants: 74.000 (1918)
Density of Population: 341 inh./sq.mi.
Capital: Coburg
Currency 1918–1920: 1 Mark = 100 Pfennig
Source, by: gonschior.de
14th of November in 1918 · fall of the monarchy in the Duchy of Saxony-Coburg-Gotha
12th of April in 1919 · division of Saxony-Coburg-Gotha into the Free States of Coburg and Gotha
30th of Nevember in 1919 · plebiscite about a annexion to Bavaria
1st of July in 1920 · annexion to Bavaria
Source: Wikipedia (D)
The name of the state was the name of the capital. The city of Coburg was first mentioned in the 12th century as "Trufalisat". In 1217 the city was first mentioned as "Coburg".
About the name's origin is nothing known, but it is suspected a Slavic origin. The prefix "co" should come from "chov" which means "protection".
Source: Wikipedia (D)