20 Heller stamp
by MOSER, Koloman, Dark green to black blueish opal green on chalky granite paper, 30 x 22 mm
The picture shows a stamp of the Principality of Liechtenstein (under Austrian administration), with the nominal value of 20 Heller, issued in 1917. It depicts Prince Johann II, Prince of Liechtenstein (1840-1929). The postage validity was from 14 June 1917 until 31 January 1921.
Koloman Moser was one of the first artists to design stamps in the Jugendstil style, including the first stamps for Liechtenstein (1912-18).