Description: The stamp features a prominent, large numeral "20" centered inside a highly stylized, decorative frame with geometric step patterns in the corners. The top text reads "DIENSTMARKE" and the bottom text reads "DEUTSCHE DEMOKRATISCHE REPUBLIK".
Circa: 1950s
Condition: Probable CTO
Notes:
This stamp belonged to the Dienstmarken category. They were exclusive to state ministries and local government bodies. Possessing these without authorization or trying to use them on private mail was strictly illegal.