The “Lernt Deutschland kennen!” (Get to Know Germany!) cards were issued over a span of 30+ years. Each card featured a scenic German picture on the left side. Any German town could order the cards and choose the view, provided they ordered at least 50,000 cards. For this reason, hundreds of different varieties exist.
The P231 “Lernt Deutschland kennen!” series shows a flat-tailed “e” in “Postkarte”, and differs from later “Lernt Deutschland kennen!” series cards in that printing codes were not yet printed on the front of the cards.