File:Treue-Dienste-der-NVA1.jpg

Image of the reverse of the Medal For Faithful Service in the National People’s Army in Gold 20 Years issued by the German Democratic Republic (GDR) from page 88 of Taschenlexikon Orden und Medaillen Staatliche Auszeichnungen der DDR, VEB Bibliographisches Institute Leipzig 1983.

Fair use for Medal for Faithful Service in the National People's Army
The image linked here is claimed to be used under fair use as:
 * 1) the image of the medal is only being used for informational purposes and it was published in the Deutschen Demokratischen Republic, a country that ceased to exist in 1990.