The complete set in detail

ES39
Sc Nr. O33
1956 - Official stamp : Inscription 'DDR' overprinted 'Zentraler Kurierdienst', watermark 'DDR and posthorn' - 10 Pfg. ; lilac and black

ES40R
Sc Nr. O34R
1956 - Official stamp, second printing : Inscription 'DDR' overprinted 'Zentraler Kurierdienst', watermark 'DDR and posthorn' - 20 Pfg. ; lilac and black

ES41
Sc Nr. O35
1956 - Official stamp : Inscription 'DDR' overprinted 'Zentraler Kurierdienst', watermark 'DDR and posthorn' - 40 Pfg. ; lilac and black

ES42
Sc Nr. O36
1956 - Official stamp : Inscription 'DDR' overprinted 'Zentraler Kurierdienst', watermark 'DDR and posthorn' - 70 Pfg. ; lilac and black