MUSTER perf; prefix AA; low s/n 100 mark der DDR
Details
Obverse: German text; coat of arms; communist revolutionary Karl Marx
Reverse: German text; coat of arms; Unter den Linden boulevard with car, buses, lampposts, Palast der Republik (Palace of the Republic) building, Berlin TV tower, Rathaus (Red city hall), and Zeughaus (arsenal)